Music Rhythm Visualizer Light Meet the Beat Sync Light – Your Mini Light Show for Every Beat! Simple, plug-and-play setup—no fuss, just fun! It may not be ‘essential', but once you add this playful glow to your space, you’ll wonder how you ever lived without it. It dresses up your TV or sound system with a splash of rhythm and color, turning even silent moments into sleek decor. Life’s better with a little extra sparkle. Light beads: LED chips Sound pickup method: in-built microphone Light color: monochrome mode, static rainbow mode, dynamic rainbow mode Power supply: USB 5V/1A

Tube phono preamplifier for turntables Exceptionally Low Noise Level Converts phono signals into line-level signals with low-noise integrated circuits and high-quality components, eliminates low-frequency interference and ensures clear sound quality. With earth connection to protect your turntable. Three Gain OptionsWith its three switchable gain modes: 39, 42 and 45 dB, this phono preamplifier allows precise adjustment of volume and sound quality for optimal indoor use. Whether you're enjoying your vinyl collection in a quiet study or a lively living room, you'll find the perfect gain setting to enhance your listening experience. Exchangeable Tubes This tube phono preamplifier delivers an exceptionally warm and smooth sound and is compatible with various models of vacuum tubes such as 6K4, 6J1, 6J4, GE5654, 6AK5 and 66. Customise your audio system by simply swapping vacuum tubes to explore and enjoy unique sound profiles as different tubes produce different audio characteristics. Versatile Audio ConnectivityThe BOX X2 tube phono preamplifier offers an MM turntable input and 3.5mm RCA/AUX options for various audio inputs. With a dedicated RCA line output for active speakers, you can connect a power amplifier via the RCA output and then connect passive speakers for an immersive audio experience What`s in the boxBox2 Phono Preamplifier x 1 Vacuum tubes x 2 12V 1.5A power adapters x 1 RCA cable x 1 User manual x 1

Tube phono preamplifier and headphone amplifier Phono preamplification Improved audio quality Versatile connection options The updated version for BOX X2, next generation phono preamplifier for unrivalled sound quality. Enhance your vinyl listening experience with the Fosi Audio BOX X4 phono preamplifier. This compact device acts as a bridge between your turntable and your sound system, amplifying the weak signal from your turntable to a level that is compatible with your amplifier or receiver. So you can realise the full audio potential of your records and be sure to hear every detail. JAN 5654W Tube MM Phono Preamplifier The BOX X4 Phono Preamplifier supports 3.5mm AUX and MM turntable inputs and converts phono signals to line-level signals with low-noise integrated circuits and high-quality components to remove low-frequency noise and ensure clear sound quality. With an earth connection to protect your turntable. Tube headphone amplifier and phono preamplifier The BOX X4 is equipped with a 3.5mm AUX headphone and RCA output, which is extremely useful beyond imagination. Variable vacuum tube model 6K4 / 6J1 / 6J4 / GE5654 / 6AK5 / 66 vacuum tubes etc. You can replace the vacuum tubes to tune your stereo system to your own taste, different tubes provide different sounds. Phono pre-amplification Amplifies the weak signal from your turntable to a level compatible with your amplifier or receiver, allowing you to hear the full audio potential of your records. Improved audio quality High-quality components and low-noise circuitry minimise unwanted noise and ensure a clear and detailed sound. In addition, bass and treble controls allow for customised sound adjustment. Versatile connection options Provides a variety of connection options, including an MM turntable input, a 3.5 mm AUX input, RCA line outputs and a 3.5 mm headphone jack, ensuring compatibility with various audio setups. What`s in the box BOX X4 phono preamplifier 12 V DC power supply Operating instructions

Phono Preamplifier MM & MC Cartridge Compatibility 4 Gain Settings: 38-66dB Precision Audiophile Components Aluminum Alloy Chassis One-Touch Power & Cartridge Switch Embracethe Vintage Charm of Vinyl with Modern Precision Supporting MM/MC cartridges, BOX X5 is compatible with most turntables, along with 4 adjustable gain levels of 38/48/56/66 dB. It utilizes high-precision capacitors and resistors, ensuring minimal noise for audio purity. Intuitive RCA terminals achieve a plug-and-play experience. Input: MM/MC RCA; Output: RCASNR≥92dB; THD≤0.009% Frequency Response: 20Hz-20kHz(±0.015dB) High PerformanceThe BOX X5 phono preamp is compatible with both MM and MC cartridges, featuring 4 gain settings and an excellent precise RIAA equalization to provide a clean, direct pass-through of a signal when paired with your turntable.Audiophile-Grade ComponentsThis preamp utilizes a variety of materials such as 2% Precision Polyester Film Capacitors, Green Sleeve Copper Lead Audio Capacitors, 0.1% High-Precision Film Resistors, OPA1612 Op-Amp, Gold-Plated RCA Jacks, and more.It picks up subtle and finite detail produced from it and delivers a truly warm and inviting sound.Multiple Gain Settings With 4-Level gain adjustment Asettings of 38/48/56/66dB, the preamplifier accommodates both MM & MC cartridge types, meeting a variety of needs. This enhances your phono stage and helps in rebuilding the vintage stereo sound.Mini and ExquisiteIt's built around a minimalist yet functional design featuring an all-aluminum alloy chassis. When paired with the V3 stereo amplifier, the BOX X5 can bring out the best in your vinyl playback, enhancing its frequency response and dynamic performance.User Friendly DesignIt has an easy-to-use one-touch power button, gain control, and a convenient toggle switch to switch between MC and MM cartridges. In addition, the grounding port ensures that the connection is secure. Specifications Input Mode: MM+MC RCA Output Mode: RCA THD: ≤0.009% SNR: ≥ 92dB Device Dimension: 4.1 x 6.5 x 1.4 inches Power Supply: 16V/1A What‘s in the box？ BОX X5 Phono Preamp x 1 16V 1A Power Adapter x 1 User’s Manual x 1

Fosi Audio BT20A Pro Bass and treble controls with midpoint positioning Bluetooth 2.0 amplifierOp-Amp Rolling: SS3602, MUSES02, OPA2134PA Interchangeable buttons: Orange button TI TPA3255 300 Watt x 2 Output Power Chip AmplifierAdvanced feedback design and high-speed gate driver error correction for efficient and high-quality audio performance with low no-load losses of <2.5W. Improved efficiency: A significant upgrade over the BT20A amplifier with interchangeable op-amps for customization. You can replace the two NE5532 plug-in op-amps with MUSES02/OPA2604AP/SS3602 amplifiers for unparalleled sound quality. With SNR≥108dB and THD≤0.005%.Improved Bluetooth 5.0 connectivity: The Bluetooth connection can be cleared by pressing and holding the volume slider for five seconds. In addition, it has a memory function for easy pairing and alarm sound. Customizable Sound with Bass and Treble Controls: The BT20A Pro Home Audio Amplifier offers a unique design for sound control. Enjoy original sound without effects by setting treble and bass effects to the midpoint. Specification: Output Power: 300Wx2 @4Ω Port impedance: 2-8Ω Input Mode: Bluetooth + RCA Output Mode: Passive Speakers + Pre-Out Frequency Response: 20Hz-20kHz (±1.2dB) THD: ≤0.005% SNR: ≥108dB Chipset: TPA3255 Bluetooth Transmission Distance: Up to 15 meters Bluetooth transmission format: SBC/AAC Device dimensions: 12.7x12.7x2.5cm DC Input Range: 24-48V Power supply: 32V 5A or 48V 5A What`s in the box: BT20A PRO Power Amplifier x 1 48V/5A Power Adapter x 1 Bluetooth Antenna x 1 User’s Manual x 1

Tube headphone amplifier Pure tube amplification Adjustable impedance and bass and treble control 2-in-1 headphone amplifier and preamplifier Supports headphones with an impedance of 16-300 Ω Vintage charm meets modern precision The GR70 is a headphone amplifier and preamplifier in one. Thanks to the many headphone connections and RCA inputs/outputs, you can easily integrate this tube preamplifier into your home audio system. Pure tube amplification: The GR70 headphone tube amplifier combines vintage charm with modern technology and delivers authentic tube sound.It's perfect for headphone fans and pairs perfectly with over-ear and in-ear headphones for premium sound. Quad tubes: Features two 5654W and two 6Ж4 vacuum tubes for two-stage amplification. The 5654W tubes increase the voltage, while the 6Ж4 tubes provide the power amplification. This configuration ensures a balanced, transparent and structured sound. User-friendly design: This tube headphone amplifier features intuitive controls, including a large volume knob, dual-sided vents, bass and treble controls, and high/low impedance mode switching, making it versatile. Two in one: It supports low and high impedance mode switching to connect 16 Ω to 300 Ω headphones and features 6.35 mm/3.5 mm headphone jacks on the front and RCA inputs/outputs on the rear for integration into home hi-fi systems. Compact and powerful: Made from CNC machined aluminum alloy, the GR70 is both robust and elegant. Despite its compact size, it delivers an output power of up to 300 mW and a 1.2 V RCA output with a signal-to-noise ratio of ≥97 dB - for a warm, clear and dynamic sound. SpecificationsInput - RCA Output - RCA, 6.35 mm/3.5 mm headphone output Power input - DC 12 V/3 A Maximum output power - 300 mW at 32 Ω Headphone impedance: Low mode: 16 Ω-120 Ω, High mode: 120 Ω-300 Ω SNR - ≥97 dB THD: RCA output ≤0.26 %, headphone output ≤0.5 % Frequency range - 20 Hz - 20 kHz (±1 dB) What`s in the boxGR70 main unit *1 6AC7 vacuum tubes *2 5654 vacuum tubes *2 Tube protection covers *2 12 V/3 A power supply *1 Operating instructions

Planar magnetic headphones 97 mm ultra-large diaphragm Luxurious walnut wood frame CNC-machined aluminum frame Detachable cable Genuine suede headband The i5 was born out of Fosi Audio's mission to make planar magnetic headphones more accessible—without compromising on sound quality, comfort, or design. Fosi Audio spent over a year working internally on development and acoustic tuning to create headphones that deliver exceptional clarity, low distortion, and lifelike detail. Immersive listening experience Pure, original sound Designed with an ultra-thin nanotechnology diaphragm, an invisible, powerful magnet system, and a precise acoustic design, the i5 delivers high resolution and low distortion for a truly lifelike listening experience. 97mm Ultra-large diaphragm The ultra-thin diaphragm, manufactured with nano-precision, delivers faster response, improved detail, and a more natural, clear, and layered sound. Ergonomic design - Long-lasting comfort The i5 is designed to fit the natural contours of the head, ensuring a secure yet gentle fit. It remains comfortable and pressure-free even during longer listening sessions, so you can enjoy your music without distraction. Dual-axis ear cup arms Enable seamless vertical and horizontal rotation for individual adjustment to different head shapes, improving both comfort and stability. Stepless silicone adjustment The headband features a silicone adjustment slider with a dampened, soft feel that allows for easy and precise positioning according to personal preferences. Robust memory metal headband The headband is made of high-strength memory metal that retains its shape even after prolonged wear. It is lightweight and flexible, reducing pressure and increasing comfort. Breathable, skin-friendly ear pads The ear pads are made of perforated leather and breathable fabric to stay cool and soft. The memory foam inside ensures all-day comfort without overheating. Refined craftsmanship - where aesthetics meet quality A sophisticated fusion of high-quality materials and elegant design creates a look that exudes sophistication, texture, and distinctive character. Sputter coating Using advanced targeted sputter technology, a highly conductive silver-metal voice coil with a thickness of only 1.3 μm is precisely applied to the diaphragm. This process significantly improves sound refinement while ensuring durability, so that the excellent audio performance remains consistently stable over time. Symmetrically arranged high-strength magnet matrix Each driver unit features 22 symmetrically arranged N50 grade neodymium magnets that ensure precise and stable diaphragm vibrations. This design enables accurate and fast dynamic response, effectively reducing non-linear distortion and producing a purer, more natural sound that faithfully reproduces the essence of the music. Rigid, highly transparent acoustic grille The highly transparent, rigid grille structure on the rear ensures stable air pressure damping and linear feedback. It smooths out frequency peaks and reduces non-linearities, creating an open, airy sound space with extremely low acoustic resistance. Technical data Device type – Open wired headphones Transducer type – Planar magnetic drive Maximum sound pressure level – ≥120 dB SPL Frequency response – 10 Hz – 50 kHz THD – < 1% at 100 dB SPL Sensitivity – 98 dB/mW at 1 kHz Nominal impedance: 28 Ω Recommended power: ≥ 500 mW Recommended minimum power: 100 mW Weight: 550 g Dimensions: 16 cm (6.30 inches) × 24 cm (9.45 inches) × 11.5 cm (4.53 inches) What`s in the box i5 headphones Connection cable with 3.5 mm plug Adapter 3.5 mm to 6.3 mmUser manual

Fosi Audio K5 Pro Gaming DAC Headphone Amplifier Mini Hi-Fi Stereo for PS5/PC/MAC/Smartphone Headphone DAC Amp Combo 16-300 Ω Powerful Headphone Drive Bass & Treble Adjustment The updated version of Fosi Audio Q4 offers a microphone function, a K5 Pro headphone-DAC amplifier combination, a next-generation audio converter with unrivaled internals, more outstanding performance, and richer audio details. Born for gaming. K5 Pro Stereo DAC Headphone Amplifier is perfect for your home game system, equivalent to an external sound card, suitable for PS5/computer/PC/MAC/active speaker, etc. The K5 Pro USB DAC converts USB Type-C/optical/coaxial signals into 3.5mm AUX and RCA signals with low distortion and wide dynamic range. Unique Design: 2-in-1 USB Type-C interface charging port and audio input mean K5 Pro is compatible with your phones (Note: your audio source must be connected to the USB A/C port). The RCA output can be connected to an amplifier or powered speaker on your desktop. 3.5MM AUX and microphone interface can drive 16ohm to 300ohm headphones. The K5 Pro headphone DAC uses Texas Instruments' NE5532 op-amp chip. The circuit design that implements this DAC has been optimized for low noise floor and clean sound. K5 Pro has noticeably improved the overall sound quality, making it even easier for you to immerse yourself in your music. Specifications: K5 Pro with master volume/bass/treble control and input selector USB Type-C Rate: up to 24-bit/96kHzOptical/Coaxial Sampling Rate: up to 24-bit/192kHz THD ≤0.003%SNR ≥110 dB Output power: 1000mw@16 Ω, 500mw@32 Ω, 300mw@64 Ω, 150mw@128 Ω, 80mw@300 Ω. Headphone impedance: 16 Ω - 300 Ω Inputs: USB, Optical, Coaxial, 3.5mm Microphone Exits: 3.5mm headphones, RCAUSB Sampling Rate: 16-bit/44.1 kHz to 24-bit/96 kHz Optical/Coaxial Sampling Rate: 16-bit/44.1 kHz to 24-bit/192 kHz Device dimensions: 112 x 95 x 30 mm Net weight: 251 g Power supply interface: USB Type-C What`s in the box: K5 Pro DAC Amplifier x1 3.5mm Headphone Splitter x1 2-in-1 USB Type-A/C to Type-C Cable x1 User Manual x1 optical cable x1

Gaming HiFi DAC/Headphone AMP Flagship chipset Sound adjustment Balanced output Shortcut buttons Two rotary controls 1.5-inch LCD display Versatile DAC amplifier: The K7 is designed for both hi-fi headphones and music lovers. It can serve as a powerful control center for your desktop audio system. Whether you enjoy music, play or work, the K7 handles it all with ease. Audiophile chipset: Equipped with the AK4493S DAC, the XMOS XU208 USB processor and the TPA6120 headphone amplifier, the K7 supports high-resolution decoding up to PCM 384kHz/32bit and DSD256. With an output power of up to 2100 mW, it can easily drive even the most demanding headphones. Comprehensive connectivity:Supports USB-C, coaxial, optical, Bluetooth aptX HD/LL and 3.5 mm microphone input. Outputs include 4.4 mm balanced, 3.5 mm unbalanced and RCA - for easy connection to headphones, powered speakers or amplifiers for desktop setups. User-friendly design: Compact and easy to use, the K7 features two large control knobs, five shortcut buttons and an angled housing for ergonomic comfort. A high-resolution display shows the status in real time and makes operation simple and intuitive. Durable all-metal construction: Made of solid aluminum alloy, the K7 has a robust, wear-resistant housing with a smooth metal finish and improved shielding against electromagnetic interference. SpecificationsChipset: XMOS XU208+AKM4493SEQ+QCC 3031+TPA6120 Maximum sampling rate: USB:PCM 384kHz-32bit/DSD256, Optical: PCM 24bit/192kHzCoaxial: PCM 24bit/192kHz, Bluetooth:PCM 24bit/48kHz Headphone impedance: 16-300Ω Input: Coaxial, Optical, USB-C, Bluetooth, 3.5mm Microphone Output: RCA, 3.5mm single-ended, 4.4mm balanced Firmware upgrade: XMOS firmware can be upgraded via the Type-C interfaceBluetooth version: 5.0 Bluetooth connection distance: ≤13m Noise floor: ≤2.5μV Bluetooth transmission audio format: SBC, AAC, aptX, aptX HD, aptX LL Input voltage and current: DC 12V 2AUSB compatible devices: Windows 7, 8, 8.1, 10, 11 (driver required)Mac OS X, Linux (no driver required) Audio parameters 4.4 mm balanced headphone output Rated output power: L+R≥2100mW+2100mW (32Ω/THD+N＜1%) SNR: 121dB THD+N: <0.0002% Dynamic range: 121dB Noise floor: ≤ 6.5μV 3.5mm headphone output (single-sided) Rated output power: L+ R≥600mW+600mW (32Ω/THD+N<1%) SNR: 122dB THD+N: 0.0005% Dynamic range: 121dB Noise floor: ≤2.5μV Frequency response: 20Hz-20kHz (±0.1dB) RCA output Output level: ≥2Vrms SNR: 20Hz-20kHz (±0.1dB) THD+N: 0.0005% Dynamic range: 121dB Noise floor: ≤3μV Frequency response: 20Hz-20kHz What`s in the box1x Fosi Audio K7 1x USB-A/C to USB-C cable 1x Bluetooth antenna 1x Power supply 1x 3.5mm headphone splitter 1x User manual

Fosi Audio LC30 Amplifier/Speaker Switcher 2-in-2 outputs Dual Analog VU Meter 2-In 2-Out: Amplifier/Speaker Vintage Optics Large VU Meter Supports up to 250W input/output Multifunctional remote control Vintage Elegance: The LC30 has two large VU meters, complete with adjustable brightness in five levels. It offers versatile connectivity with two inputs and two outputs and allows for four different configurations. In addition to its functional capabilities as a switch, it is an exquisite decorative VU meter that allows you to enjoy a lively, audiovisual feast. Versatile Compatibility: Fully supports a wide range of amplifiers. The large cabinet design not only accommodates two Fosi Audio compact amplifiers, but also integrates seamlessly with traditional Class A, Class B, Class AB and tube amplifiers to meet your diverse needs. Superior components: Integrated with 390-Ω protective load resistors, thickened copper foil circuits, premium speaker terminals, and switching relays, the LC30 ensures virtually no impact or loss of sound quality and supports a maximum power transfer of 250W per channel. So you can enjoy the pure high-fidelity sound. Usability: Offers both button and remote control, allowing you to switch between two amplifiers and two speakers with a tap. It streamlines the process of A/B comparison testing for two amplifiers or speakers and ensures easy accessibility. In addition, adjusting the brightness of the backlight and needle sensitivity is effortlessly easy, which improves the overall user experience. Designed for audiophiles: The LC30 has been specially developed to meet the wishes of hi-fi fans. It embodies Fosi Audio's signature all-aluminum alloy construction for durability and reliability. This device is designed to be a permanent companion to your hi-fi audio system and ensure lasting satisfaction. Specifications: Model LC30 Input - up to 2 amplifiers Output - up to 2 pairs of passive speakers Supported Amplifier Types - BTL, Class A, Class AB, Class B, Class D, Tube Amplifier, etc.Maximum Connector - 250W @ 4Ω (per channel) VU Meter Size - 85 x 45mm VU Meter Brightness Adjustment - 100%, 75%, 50%, 25%Off Idle amplifier protection Built-in 390 Ω resistance protection Supply voltage DC-5V What`s in the box: Fosi Audio LC30 x 1 Instruction manual x 1 Remote control x 2 USB-C Power Cable x 1

Tube Integrated Bluetooth Amplifier with DAC and VU Meter All-in-One DAC Amp/Headphone Amp Replaceable vacuum tubes 6AK5, 6AK5W, 6Zh1P, 6J1 Mini VU Meter: Classic Retro Vibe Remote ControlAll-in-One DAC Amp/Headphone Amp The MC331 supports one analog and four digital input modes, ensuring compatibility with a broad range of audio sources. It also boasts a pre-out port, facilitating easy setup of a 2.1 system. The VU meter and vacuum tubes add a touch of retro flair, delighting audio enthusiasts with both visual and auditory pleasure. All-in-One DAC Amp: A DAC, amplifier, preamplifier, and headphone amplifier are all integrated into the Fosi Audio MC331. You can easily switch between audio sources with the help of the remote control, ensuring a seamless and enriched listening experience. Amazing Combination: As an integrated tube DAC amp with a VU meter, the visual aesthetics of the 5654W vacuum tubes and VU meter add a nice warm and soft effect to not only the appearance but the sound as well, giving the modern look a retro feel. Setup Flexibility: It supports Bluetooth, USB, coaxial, optical, and RCA inputs, making it compatible with a variety of sources such as computers, phones, CD players, turntables with built-in phono preamps, etc., allowing you to build various systems. Compact Yet Powerful: The MC331 only takes up minimal desktop space but boasts a maximum power output of 105W x2@4Ω, effectively driving your bookshelf speakers. Additionally, it has a pre-out and a 3.5mm headphone output, making it versatile enough. User-Friendly Design: The MC331 comes with a remote control, allowing you to adjust bass and treble from the comfort of your listening chair. Its replaceable tube design lets you customize the sound signature to suit your personal preferences.MAX Power Output: 105W×2@4Ω Input Mode: Bluetooth +RCA +USB +COA+OPT Output Mode: Passive Speakers Output, Pre-Out, 3.5mm Headphone Output THD: ≤0.03% SNR: ≥100dB Device Dimension: 10 x 2 x 2.7 inches Terminating Impedance: 4-8 Ohm Power Supply: 24V/4.5A What‘s in the box？ MC331 Power Amplifier x 1 24V/4.5A Power Adapter x 1 Remote Control x 1User’s Manual x 1

2.1 Channel Integrated Amplifier with DAC, VU Meter and Bluetooth All-in-One DAC Amplifier High Power with Great Sound 5 input modesBass and Treble Controls Mini VU Meter - Classic Retro Vibe All-in-One Multifunctional DAC Amplifier Fosi Audio is dedicated to "redefining HiFi with unmatched value." Inspired by audiophile feedback, we introduce the MC351, a pioneering power amplifier blending decoding and amplification, catering to diverse HiFi needs. Its classic meter design and dynamic pointer movement evoke nostalgia. All-in-One DAC Amplifier: The MC351 integrated amp features high-resolution decoding capabilities, supporting Bluetooth, USB, Optical, and Coaxial digital inputs. With its extensive input and output options, you can easily set up a 2.1 home theater or other stereo HiFi audio systems. High Power with Great Sound: Equipped with two high-end Texas Instruments TPA3255 Class-D amplifier chips and a 100-fin heatsink, the MC351 can stably output up to 165W x 2 + 350W power in a 2.1 channel setup. The dual PCBA separated design ensures that the input and output signals do not interfere with each other, providing you with the purest and most impeccable sound quality. User-Friendly Control Design: Supports one-touch switching between 5 input modes and includes bass and treble controls, with central detents for tone defeating, for easy sound customization. It also features an automatic standby function, entering standby mode after 2 minutes of no signal input to effectively reduce power consumption. Vintage Charm: The eye candy round mini VU meter adds a classic retro vibe to your sound system. The needle of the level meter will dance to the music, providing you with both visual and auditory enjoyment. The MC351 is an excellent companion for turntables, allowing you to relive classic tracks.Exquisite Craftsmanship: Featuring an all-aluminum-alloy CNC integrated design and a finely sandblasted metal finish, the MC351 boasts a seamless body with no visible screws, showcasing minimalist aesthetics and the all-metal body ensures durability. Specifications Output Power: 165W x 2 + 350W @ 4Ω Terminating Impedance: 4-8Ω Input Mode: Bluetooth 5.3+RCA+COA+OPT+USB Output Mode: SPK OUT+SUB OUT+3.5mm PRE OUT Frequency Range: 20Hz - 20KHz(±0.1dB) THD: ≤0.03% SNR: ≥100dB Device Dimension: 13.82 x 9.21 x 3.62 inches DC Input Range: 24-48V Sampling Rate: USB24bit/96kHz ; OPT/COA 32bit/192kHz Power Supply: 32V/5A, 48V/5A What‘s in the box？ MC351 Power Amplifier x 1 32V/5A Power Adapter x 1 User’s Manual x 1

Bluetooth Dac/Amp Versatile connection options User-friendly design High performance Long battery life Great workmanship Versatile connection options Supports both Bluetooth and a 3.5 mm cable input. Experience high-fidelity, low-latency music anytime, anywhere. Also works as a desktop Bluetooth receiver and amplifier, making it an ideal partner for hi-fi headphones. User-friendly design Designed with you in mind. Compact yet equipped with extensive setting options and simple controls. With a rotary volume control to prevent accidental operation, an easy-to-use gain switch and a toggle switch for bass amplification. High performance The OPA1656 operational amplifier perfectly supports headphones with an impedance of up to 300 ohms and ensures a clear and clean sound. Developed by audio professionals with two decades of experience, you are guaranteed an intense experience where no musical detail is left behind. Long battery life The N3 is powered by a robust 1200 mAh lithium battery and promises up to 10 hours of uninterrupted music enjoyment. The isolated power supply ensures consistent and unaltered sound quality, so your music can be played back without any hiccups. Exquisite craftsmanship The CNC-machined aluminium alloy housing not only looks stunning but also guarantees durability and a premium feel, feel the difference with every interaction. What`s in the boxFosi Audio N3 headphone amplifier x 1 Type A charging cable x 1 User manual x 1

Fosi Audio P3 Tube Preamp with Bluetooth aptX LL HD Bass and Treble Tone Controls Authentic Tube Amplification Qualcomm aptX LL Bluetooth Treble & Bass Adjustment Ideal Partner to V3 Amp True tube amplification: The preamp circuit increases the voltage to 54V, ensuring that the tubes reach their full potential and provide a warm and rich experience. The unique preamp technology delivers audio-only signals and faithfully reproduces crisp highs, full mids and deep, rhythmic bass. Bluetooth 5.1: Equipped with the Qualcomm QCC3031 chip, the P3 preamplifier guarantees impressive wireless sound quality and low latency with compatibility for aptX HD and aptX LL codecs formats. In addition, the manual reset button prevents accidental connections by others and increases connection reliability. Versatile Connectors: The P3 offers Bluetooth/RCA inputs and RCA/AUX output/3.5mm headphone outputs. It can help create a 2.1-channel audio system by connecting active speakers/amplifier and a subwoofer. As a headphone amplifier, it supports headphones with an impedance of 16 Ω to 300 Ω. Premium components: It uses audiophile ELNA capacitors and a taper-A potentiometer. The bass and treble controls feature central detents for tone cancellation. With an SNR of up to 103 dB and a crosstalk of 95 dB, it forms a hi-fi audio system when paired with the V3 amplifier from the same series. Specification: RMS power: 250 mW @16Ω; 150 MW @32Ω; 32 MW @250Ω; 20mW @300Ω Headphone impedance: 16-300 Ω Noise floor: 64uV Input Mode: Bluetooth, RCA Output Mode: RCA, 3.5mm Headphone Jack, AUX Output Frequency Response: 20Hz-20kHz (±1dB) Dynamic range: 104 dB THD: ≤0.02% SNR: ≥103dB Crosstalk: 95 dB Bluetooth chip: QCC3031 Bluetooth Version: 5.1 Bluetooth Range: ≥10m Bluetooth codecs: SBC/AAC/aptX/aptX HD/aptX LL Power Consumption DC: 12V/1.5A~3AWhat`s in the box: Fosi Audio P3 Tube Preamp x1 User Manual x1 5654W Vacuum Tube x2 12V/1.5A Power Supply x1

Hifi Stereo PreamplifierTriple RCA inputs Bass, treble, and gain controls Motorized knob for smooth adjustment Bypass function for a pure signal path Operational amplifier rolling: SS3602, MUSES02, OPA2134PAAnother Masterpiece Driven by Voice of Customers The P4 is a mini preamp self-developed by Fosi Audio based on extensive feedback from users worldwide after the launch of the V3 stereo amp. Mini Control HubThe P4 supports up to 3 RCA inputs, allowing easy connection to CD players, streamers, DACs, cassette decks, and turntables with built-in phono preamp. Switch between sources with a click for seamless audio control. Practical and User-FriendlyEquipped with volume control, bass and treble adjustment with bypass function, three-level gain control, and a remote. The preamplifier offers convenient audio setup and optimization, making every listening session effortless. Motorized PotentiometerFeaturing a high-precision motorized analog pot, the P4 delivers smooth volume adjustment, reduced noise, and minimal distortion for a purer and more refined sound experience. Compact and SolidThe P4 stereo preamp features a sleek, minimalist design that saves space and provides robust resistance to electromagnetic interference, ensuring reliable performance over time. Exceptional PerformanceWith a low noise floor, high signal-to-noise ratio, and extremely low distortion, the P4 pre-amplifier delivers pristine audio, ensuring accurate sound reproduction and enhancing the listening experience for audiophiles.Specifications Channel: 2.0 Input Mode: RCA*3 Output Mode: RCA, Pre-out SNR: ≥ 110dB Dynamic Range: ≥ 110dB THD+N: ≤ 0.003% Crosstalk: ≥ 105dB Noise Floor: ≤ 9μV Tone Adjustment Gain: ±12dB Frequency Response: 20Hz-20kHz(±0.1dB) Power Supply: DC 12V/1.5A What‘s in the box？ Fosi Audio P4 Mini Preamplifier x 1 12V/1.5A Power Supply x 1 User’s Manual x 1

5-Channel Headphone Splitter AmplifierFive-Channel Independent Amplification Independent Level Controls for Each Channel Live Real-Time Monitoring One-Touch Mute The PH05 is a high-performance five-channel headphone amplifier that utilizes the Texas Instruments NE5532 operational amplifier chip, relying on high-quality capacitors, inductors, and resistors to achieve stable and pure high-fidelity audio output. The PH05 features five 3.5mm audio output ports, allowing for powering up to 5 pairs of headphones and up to 5 independent volumes, with outstanding audio quality. Each channel provides a rated output power of 310mW (32Ω load), and the five output channels can independently adjust the volume, ensuring consistent sound quality even with headphones of various impedances. The PH05 also features a one-touch mute function for quick and convenient switching. Designed specifically for audiophiles, this compact headphone amplifier is sure to provide you with a true HiFi music experience.

Desktop DACVersatile Mini DAC: Ideal as a compact desktop external digital-to-analog converter for your streamer, CD player, computer, TV, or tablet, connecting seamlessly with home audio amplifiers, headphone amps, or powered speakers for exceptional sound quality. Audiophile-Grade Chipset: Equipped with the AKM AK4493S DAC, XMOS XU316 audio processor, and OPA1612 op-amp, supporting maximum sampling rates of PCM 32bit/768kHz and DSD512. Enjoy crystal-clear audio for a truly immersive listening experience. Comprehensive Connectivity: Features Optical, Coaxial, and USB inputs, as well as RCA and Sub-Out outputs, seamlessly connecting to PCs, Macs, TVs, CD players, tablets, and more digital sources. Simple plug-and-play setup makes integration effortless. Compact and Solid: Crafted from high-quality aluminum alloy, this compact DAC is stylish, durable, and space-saving. Its sleek profile effortlessly blends with any desktop environment, keeping your setup neat while adding a sophisticated touch. Superior Performance: Delivers an impressive 121dB signal-to-noise ratio, ultra-low distortion of 0.00012%, and outstanding dynamic range of 121dB—matching or surpassing higher-priced DACs, putting audiophile-grade sound easily within your reach.User-Driven: Pure HiFi DAC Crafted with Audiophile Precision The Q6 is a mini DAC engineered to meet the sophisticated demands of audiophiles. Drawing from extensive user feedback, it integrates precision engineering with high fidelity to ensure unmatched audio purity. Custom-made for those who seek exceptional clarity and depth, the Q6 stands as a testament to our commitment to quality and innovation in HiFi technology. Specifications Chipset: XMOS XU316 + AK4493 + OPA1612 + NE5532DR Input: USB Type-C, Optical, Coaxial Output: RCA, Sub Out PC-USB supports input sampling rate: Up to 32Bit/768kHz, DSD512 Optical/Coaxial supports input sampling rate: Up to 32Bit/192kHz THD: <0.00012% SNR: ≥121dB PC-USB support operating system: XP/W8/W10/MAC/linux Power Supply: 5V 2A What‘s in the box？ Fosi Audio DAC-Q6 *1 2-in-1 USB Type-A/C to Type-C Cable *1 USER MANUAL *1

Mono power amplifier for passive speakers Ideal for subwoofers or minimalist setups Balanced XLR input RCA input with 25dB and 31db Texas Instruments TPA3255 amplifier chip A variety of input options RCA, XLR and TRS connectors Innovative design for heat dissipation Impressive output power Powerful sound in a compact size Automatic standby mode after 10 minutes 48V-5A power supply supplied The Fosi Audio V3 MONO is a compact, powerful yet affordable 1-way amplifier. Based on a TI TPA3255 amplifier chip, it can deliver up to 240W at 4Ω. In addition, this amplifier is equipped with a variety of audiophile-grade components, such as Japanese and German Elna and Wima capacitors respectively, or a duo of DIP8-mounted TI NE5532 OPAs that you can swap out if you want a specific sound colouration. In terms of connections, the Fosi Ausio V3 offers a balanced XLR/jack combo input, an RCA input and a speaker connection for the output. Noise and distortion-free amplification The V3 mono amplifier benefits from PFFB technology, an advanced feedback design that significantly reduces distortion, improves linearity and increases efficiency. It also solves a structural problem of Class D amplification by eliminating the load dependency inherent in this technology. In addition, the aluminium housing isolates the power supply from the amplifier section, preventing crosstalk. A flexible amplifier The V3 amplifier is designed to be integrated into various configurations. For example, you can easily switch between RCA and XLR inputs using the switch on the front. You can also adjust the gain of the RCA input between 25 dB and 31 dB. And if you want a different sound colour, you can swap the TI NE5532 OPAs via DIP8 mounting. A revised cooling system To prevent overheating and thus ensure the longevity of the amplifier, Fosi Audio has developed an innovative ventilation system in addition to the traditional heat sink on the amplifier chip. The ventilation system is designed to prevent the ingress of dust without compromising cooling, ensuring impeccable sound quality combined with increased reliability. What`s in the box1x V3 Mono AMP 1x 48V 5A power supply 1x operating instructions

Fosi Audio ZA3 Mono/Stereo Amplifiers 2CH Mono Amp With TPA3255 Chip Dual-Mode Innovation This new generation Fosi Audio Mini amplifier offers both stereo and mono modes, flexibly adapts to your different needs and allows for seamless mode switching. In stereo mode, it delivers robust power of up to 180W, while in mono mode, power increases to a maximum of 235W. Pair two ZA3 devices in mono configuration to create a powerful audio system that greatly enhances your listening experience. Richer connectivity: The ZA3 is a balanced input and trigger input amplifier and features a balanced combo audio input that supports both XLR and 6.3mm jack plugs. This design minimizes interference and reduces noise floor. The 12V trigger-in connector allows synchronization with other devices and optimizes the process of switching on and off without individual operation. Audiophile components: The ZA3 features the TPA3255 high-end Class-D amplifier chip and uses high-quality Japanese NCC, ELNA, and German WIMA capacitors, as well as Japanese Sumida inductors for exceptional audio quality. With a SINAD value of up to 89 dB, a signal-to-noise ratio of up to 106 dB, and a low noise floor of only 150 μV, it delivers exceptional clarity and low distortion. Advanced Heat Dissipation:Based on the V3's groundbreaking heat dissipation design, we improved the ZA3's cooling system by making it larger enclosure, moving the vents to the sides, and adding dust covers to provide better ventilation for sustained and stable high performance. Improved Scalable Fun: Personalize your audio experience with the op-amp's rolling feature! The ZA3 has five interchangeable op-amps for the left and right channel outputs, the balanced input, and the subwoofer output. Experiment with compatible DIP8 dual op-amps such as Sparko's SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4558, LM4562, LME49720HA, etc. to perfectly tune your sound. Specifications: 2.0 Amplifier Chip: Texas Instruments TPA3255 SINAD: 89dB SNR: ≥106dB Dynamic range: ≥106dB THD: <0.006% Speaker Impedance: 2-8Ω Output Power: With 48V/5A PSU Stereo: 180Wx2 @4Ω Mono: 235Wx1 @4Ω Frequency Response: 20Hz - 20KHz(±0.1dB) Input Voltage: DC 24-48V Inputs: RCA, XLR, 1/4" TRS Outputs: Speaker Outputs, Active Subwoofer Connection Dimensions and weight: 15.49 x 18.39 x 5.08 cm; 1.78 kilo Power Adapter: 48V/5A

Fully balanced desktop DAC High performance ES9039Q2M chip XLR output / Trigger In/Out Op-Amp rolling: SS3602, MUSES02, OPA2134PA Perfectly matched to ZA3 amp Flagship desktop DAC: A fully balanced digital-to-analogue converter preamplifier with multiple inputs and outputs. The first Fosi Audio DAC to support HDMI ARC input and equipped with a high-performance ES9039Q2M chip that delivers rich and superior sound. Premium chipset: The ZD3 features a chipset consisting of XMOS XU316+ES9039Q2M+QCC3031+LME49720. It supports high-resolution audio with a maximum capacity of DSD512 and PCM 32bit/768kHz sampling rates, offering unparalleled clarity and depth. Versatile and flexible: The ZD3 offers extensive connectivity options and supports inputs such as Bluetooth, USB, OPT, COAX, HDMI ARC and balanced XLR/RCA outputs. This flexibility allows you to customise your audio system for different setups and scenarios. Ease of use: The ZD3 features a 1.5-inch OLED display, remote control, preamplifier bypass switch and 12V trigger interface that allows synchronised switching on and off with other home audio devices, all for a good user experience. Familiar design: With the same design language as the ZA3 amplifier, it has a compact and exquisite appearance and audiophile-grade components for high performance and excellent sound quality. Combine it with the ZA3 to create a robust home audio system. *When the ZD3 is used with an LG TV, a bug in the LG TV system may cause problems with the HDMI CEC function. Specifically, after turning off the TV with the power button or remote, both the TV and the ZD3 may automatically turn back on after a short period of time. If you are using an LG TV, we recommend disabling the HDMI CEC function. Fosi Audio is working hard to resolve this issue, apologises sincerely for the inconvenience caused and thanks you for your understanding. Specifications Chipset: XMOS XU316 + ESS 9039Q2M + QCC3031 + LME49720 Maximum Sampling Rate: USB: PCM 32bit/768kHz; DSD512 OPT/COAX: PCM 24bit/192kHz Bluetooth: PCM 24bit/48kHz Output Level: XLR: 5Vrms RCA: 2.5Vrms Input mode: USB, HDMI (ARC), Coaxial, Optical, Bluetooth Output mode: XLR, RCA SINAD: 126dB THD: ≥120dB THD+N: <0.00008% Dynamic range: ≥123dB Noise floor: ≤2μV Bluetooth version: 5.0 Bluetooth connection distance: ≥13m Bluetooth transmission audio format: aptX HD, aptX, AAC, SBC Power supply: DC 12V 1.5A USB compatible devices: Windows 7, 8, 8.1, 10, 11 (some require drivers; please read the user manual) Mac OS X, Linux (no driver required) What`s in the box DAC ZD3 *1 12V power adapter *1 Infrared remote control *1 USB-A to USB-B cable *1 3.5mm trigger cable *1 USER MANUAL *1

DAC Headphone Amp All-in-One Desktop Hi-Fi Dual-Power Balanced Amp 3-Level Gain Bass/Treble EQ + 6 Filters Comprehensive Desktop HiFi Solution With comprehensive input and output options, the ZH3 functions as a DAC, headphone amplifier, and preamp, which can be connected to IEMs, over-ear headphones, active speakers, and amplifiers. Featuring UAC 1.0 and 2.0, it is also compatible with gaming consoles, ensuring seamless connectivity across multiple desktop devices. An all-in-one desktop HiFi DAC/headphone amp/preampWith premium chipsets and self-developed fully balanced circuitry, low noise and low distortion. Perfect for HiFi headphones or active speakers, it's the ultimate desktop audio solution. Exceptional Sound QualityPremium chipset with AKM4493SEQ DAC, XMOS XU316 processor, and four OPA1612 amps supports up to PCM 768kHz/32bit & DSD512. A self-developed dual-power balanced amp circuit with multiple ultra-low-noise LDOs and capacitors keeps noise as low as 1.9μV. High Output PowerEquipped with both 6.35mm single-ended (640mW@32Ω x2) and 4.4mm balanced (2570mW@32Ω x2) outputs.The 3-level gain switch supports headphones ranging from 16Ω to 300Ω, making it perfect for almost in-ears and over-ear headphones. Versatile & FlexibleWith coaxial, optical, USB, and RCA inputs, plus 4.4mm, 6.35mm, RCA, and XLR outputs, it connects to diverse audio sources and devices. Functions as a DAC/amp/preamp for desktop HiFi. UAC mode switching ensures full compatibility with game consoles for both music and gaming. Rich CustomizationFeatures bass/treble EQ adjustments and 6 filter types, including Bypass mode and two swappable op-amps, allowing you to customize the sound to match your preference. All functions are integrated into the screen for a clean, premium look that continues the Z-Series design language.Specifications Signal-to-noise ratio (SNR): ≥ 121 dB Distortion: ≤ 0.00018% for 4.4mm headphone OUT, ≤ 0.00024% for 6.36mm headphone OUT Input connector type: Coaxial, Optical, USB, RCA Output connector: RCA, XLR Power requirement: DC 12V Dimensions (L x W x H) 15.5 x 16.2 x 5 cmWhat‘s in the box？ Fosi Audio ZH3 x 1 6.35mm Adapter x 1 12V Trigger Cable x 1 IR Remote x 1 User Manual x 1 USB-A/C to USB-C Cable x 1 DC 12V Power Adapter x1

Balanced hi-fi preamplifier Audiophile-quality components Versatile options for sound optimization Compact aluminum alloy design Various inputs and outputs HPF setting 12 V trigger input and output Remote control The Fosi Audio ZP3 is a balanced preamplifier with NE5532 AOPs. It delivers interference-free sound across a wide dynamic range and minimizes hum loops. With its performance and connections, such as TRS/XLR combo jacks and balanced XLR output, the ZP3 is perfect for audiophiles and professionals. There are also controls for bass and treble as well as channel balance, so you can adjust the sound to your liking. Three additional features are also available. These include a subwoofer output (20 Hz–200 Hz) for installing a 2.1-channel system, an XLR/RCA crossover switch (20 Hz–20 kHz / 80 Hz–20 kHz / 120 Hz–20 kHz), and a bypass mode switch. 3 inputs / 3 outputs, effortless switching Equipped with three inputs: RCA 1, RCA 2, XLR and three outputs: RCA, XLR, Sub-Out, making it easy to connect multiple audio sources for a truly flexible listening experience. Compact aluminum alloy design Metallic texture, standard design, and refined, with improved resistance to electromagnetic interference. HPF setting Offers three levels of high-pass filtering: 20 Hz-20 kHz, 80 Hz-20 kHz, 120 Hz-20 kHz. Ensures that only the high-frequency portion is sent to the main speakers, improving voice clarity and detail resolution. Versatile sound optimization options Bypass: Enjoy a super clear, noise-free listening experience by bypassing the tone control. Bass and treble controls: Achieve a personalized sound with a midrange reference for better sound optimization. Balance control: Adjust the volume between the left and right channels. Volume memory: Automatically stores the volume for each input source. When switching between sources, the volume is set to the previous level, making your hi-fi system smarter and more user-friendly. Multifunctional IR control With the remote control, which can be used for multiple Fosi Audio devices, you can conveniently adjust the volume, switch sources, and turn the device on and off from the comfort of your seat. *Note: This remote control is compatible with select Fosi Audio products. Unmarked buttons will not work with the ZP3. Audiophile-grade components Made from high-quality components such as ELNA capacitors, NJR NJU72315 volume IC, and gold-plated RCA jacks. These components reduce noise and distortion, ensuring exceptional clarity and high-fidelity performance.No compromises on materials, guaranteed low-noise and precise sound for a first-class audio experience. Suitable for various scenarios A convenient control center for all your audio sources, speakers, and subwoofers. 2.0 channel – Three audio sources + ZP3 + AMP + passive speakers 2.1 channel audio source + ZP3 + AMP + passive speakers + subwoofer 12 V trigger input/output Enables synchronized power on/off with audio setups such as the ZD3/ZA3, automating system control for seamless operation. Technical Specifications Product Type – Preamplifier AOP – NE5532 Inputs 2x single-ended stereo RCA 1x balanced TRS/XLR combo jack. Outputs 1x single-ended stereo RCA (20 Hz–20 kHz / 80 Hz–20 kHz / 120 Hz–20 kHz) 1x balanced stereo XLR (20 Hz–20 kHz / 80 Hz–20 kHz / 120 Hz–20 kHz) 1x subwoofer output (RCA) (20 Hz–200 Hz) Specifications for balanced XLR output SNR: ≥ 112 dB Dynamic range: ≥ 112 dB THD+N: ≤ 0.0007% Noise level: ≤ 6 uV Specifications for RCA output SNR: ≥ 115 dB Dynamic range: ≥ 115 dB THD+N: ≤ 0.0008 % Noise level: ≤ 4 uV General Power supply: AC 100–240 V Dimensions: 239 mm x 164 mm x 54 mm What`s in the box 1x Fosi Audio ZP3 preamplifier 1x IR remote control 1x 12 V trigger cable 1x power cable