R2R Streaming DACIn-house-developed discrete R-2R module (25-bit, complementary): Resistor-based DAC for PCM with a direct, natural soundstage and fine details.True 1-bit DSD converter: Native DSD64–DSD512 signal path; in DIRECT-DSD mode, the bitstream is fed directly into the 1-bit switching array without PCM conversion.FPGA Core: Custom logic for clock management, digital shaping, DoP demux, and seamless switching between PCM and DSD.CK-01 Femtosecond-Grade Clock: The master clock with extremely low phase noise reduces jitter, ensuring improved sound imaging and precision.Three Digital Filters + NOS: Choose classic OS filters or NOS for minimal preprocessing; supports DSD passthrough.Optimized Inputs: USB (XMOS XU316), coaxial, optical, and Bluetooth 5.0—all the essentials without the overhead of network streaming.Analog Convenience: Simultaneous fixed-level outputs via RCA (2 Vrms) and XLR (4 Vrms) for easy integration with preamps and powered speakers.Power supply architecture: Dedicated, independently regulated power supply groups in an integrated low-noise power supply; also supports an external 9–18 V DC input (optional).Ergonomics: Aluminum housing (black or silver), LCD display with adjustable brightness and sleep mode, and included remote control.The Audalytic DR70 is a high-end DAC for discerning audiophiles that combines a discrete R2R architecture with comprehensive compatibility with high-resolution audio formats.Developed by Gustard, this model features an R2R module, a native 1-bit DSD converter, and a dedicated FPGA—all synchronized by a CK-01 femtosecond oscillator—ensuring sound reproduction of exceptional precision and musicality.Whether enjoying music via USB, coaxial, optical, or Bluetooth 5.0—the DR70 stands out as a versatile and high-performance solution, ideal for home audio systems or high-end headphones.Discrete R2R Architecture and Native DSD ConversionAt the heart of the DR70 is a discrete R2R module that delivers remarkably pure PCM conversion without digital artifacts. For DSD formats, the DR70 features a native 1-bit converter capable of processing DSD64 to DSD512 streams without intermediate conversion to PCM, thereby preserving the integrity of the original signal. This approach ensures a natural soundstage, a wide dynamic range, and the reproduction of the finest details, even in the most demanding recordings.FPGA & ClockThe FPGA, developed specifically for the DR70, handles signal processing logic, clock management, and noise-free switching between PCM and DSD modes, while the CK-01 femtosecond oscillator reduces jitter to an imperceptible level, thereby improving the accuracy of the stereo image and the depth of the soundstage.Extensive Connectivity and Integrated StreamingThe DR70 connects seamlessly to all your sources: USB (XMOS XU316): Supports PCM streams up to 32-bit, 768 kHz, and native DSD up to DSD512, as well as DoP64 through DoP256.Coaxial / Optical: Compatible with PCM streams up to 24-bit, 192 kHz, and DSD DoP64.Bluetooth 5.0: Integrates the LDAC (24-bit/96 kHz), aptX, AAC, and SBC codecs for high-resolution wireless listening.Thanks to this versatility, the DR70 can be integrated into a wide variety of configurations, whether in a wired system or a wireless setup.Analog Outputs and Power SupplyThe DR70 offers simultaneous RCA (2 Vrms) and XLR (4 Vrms) outputs, both with fixed levels, for optimal compatibility with active preamplifiers or speakers. The output impedance is approximately 100 Ω, ensuring a stable connection with most devices.The built-in low-noise power supply is designed to minimize interference, but the DR70 can also be powered by an external 12–18 V DC power supply—for users who wish to further optimize performance.Output Stage and Power Supply CircuitsAudalytic DR70: Design and Ergonomics The DR70’s anodized aluminum housing combines ruggedness with elegance. An LCD display with brightness control and an infrared remote control simplify daily use.The DR70 is compact and lightweight, blending unobtrusively into any audio environment.

Balanced Headphone Amplifier and PreamplifierFully balanced, discrete Class-A circuitry: Four pairs of power transistors deliver high output power and excellent control.LME49720 dual operational amplifier: Wide dynamic range and exceptional fidelity for lifelike sound reproduction.R-2R relay volume control: Provides lossless precision and perfect channel balance across all paths.Versatile inputs and outputs: RCA/XLR inputs, balanced 4.4-mm and unbalanced 6.35-mm outputs.High-impedance compatibility: Effortlessly drives headphones up to 600 Ω.Pure preamp mode: Switchable output for seamless integration into speaker systems.Multi-stage power supply: A low-noise 30-VA transformer and multi-stage regulation ensure a stable, clean power supply.High-quality construction: The aluminum alloy chassis offers excellent shielding and an elegant feel.Audalytic HP70The Audalytic HP70 is a high-end headphone amplifier and preamplifier that delivers exceptional sound quality thanks to its fully balanced and discrete architecture.Developed by Audalytic, a Gustard brand specializing in affordable high-end audio solutions, the HP70 is designed for discerning audiophiles seeking powerful and precise amplification for their headphones or high-quality preamplification.The HP70 features a fully balanced, discrete Class A topology that delivers robust power with precise control using four pairs of power transistors.Each stage is tuned for minimal distortion, while the LME49720 operational amplifiers ensure transparency and musical realism.The built-in low-noise 30-VA transformer and multi-stage regulation circuits minimize ripple and interference, ensuring a clean, stable sound even under heavy load.The precision-machined aluminum chassis improves both signal shielding and thermal stability—for a sound that is as pure as it is powerful.Fully Balanced Design and Discrete ComponentsThe HP70 is distinguished by its fully balanced and discrete design, which utilizes high-quality components such as the LME49720 operational amplifier.This design is based on carefully selected power transistors and discrete components that ensure linear amplification and minimal distortion.Each stage of the amplifier is optimized to deliver fast response and pure sound reproduction with remarkable dynamics and clarity. The use of discrete components also enables better audio signal management, reducing artifacts and improving overall sound fidelity.Versatility and ConnectivityIn addition to its function as a headphone amplifier, the HP70 can also serve as a preamplifier, making it compatible with a wide variety of audio systems. It is designed to integrate seamlessly into a hi-fi system, either in combination with an external DAC or as a standalone component.Optimized Power Supply StageThe HP70’s power supply stage is designed to ensure a stable and clean power supply, which is essential for optimal audio performance. Thanks to careful engineering and high-quality components, the power supply minimizes background noise and interference, ensuring an uncompromising listening experience. This stability results in better instrument separation, a wider soundstage, and more detailed reproduction, even in the most complex musical passages.Build Quality and FinishThe Audalytic HP70 features a robust, meticulously crafted design with a sleek, elegant finish. Its metal housing ensures effective heat dissipation and protection against interference, while its intuitive controls allow for precise adjustment of volume and audio settings.

Balanced Class-A Headphone AmplifierFully balanced, discrete Class-A amplifierFeatures 8 pairs of power transistors to ensure sufficient drive and controlThe headphone amplifier’s power output can be disabled separately, turning the unit into a pure preamp outputThe preamplifier uses two directly mounted LME49720 dual operational amplifiersThe use of a matrix relay for volume control effectively ensures that the 4-step volume control is smooth and distortion-freeTwo 50-W toroidal transformers specially designed for audio applicationsThe preamp outputs can be disabled to easily switch between headphone and speaker modesThe input stage features a fully balanced architecture2 GAIN stagesWith remote controlUltimate Discrete Class-A AmplificationWith its fully balanced discrete Class-A amplifier, the Gustard H26 is a testament to exceptional audio quality. Featuring 8 pairs of power transistors, it offers unparalleled drive and control, delivering a listening experience characterized by clarity and precision.Unleashed VersatilityWhat sets the Gustard H26 apart is its versatile design. The headphone amplifier’s power supply can be switched off independently, transforming the device into a dedicated preamp output. This feature gives users the freedom to effortlessly customize their listening experience.Seamless Switching with Preamp OutputsTo enhance user convenience, the H26 incorporates two directly inserted LM49720 dual operational amplifiers for the preamp. This design enables seamless transitions between headphone and speaker playback. By disabling the preamp outputs, users can effortlessly switch between audio sources.Precise Volume Control with Matrix RelaysThe Gustard H26 uses matrix relay volume control, which ensures a consistent, distortion-free volume experience across all four channels. This precision allows users to make nuanced and controlled adjustments to achieve their preferred audio intensity.Brilliant, Fully Balanced Input StageA key feature of the H26 is its fully balanced input stage. This architectural choice transforms the audio experience, delivering a level of richness and clarity. Even unbalanced RCA inputs benefit from the H26’s fully balanced drive, delivering uncompromising sound quality.Mastery of High-Quality ComponentsThe H26 incorporates fast, low-noise rectifiers and uses four Nikon Nichicon capacitors for main filtering. A low-noise, high-current voltage regulator enhances overall performance. Together, these components contribute to an exceptional listening experience characterized by fidelity and precision.Clean Design for Audiophile PurityBeyond its technical features, the Gustard H26 is the result of rigorous design principles. The layout is uncluttered, and solid materials are used to ensure a clean and efficient amplification process. The H26 is not just an amplifier; it is a testament to audiophile purity and precision.

26-bit network streaming DAC with R2RPure R-2R architectureNative DSD and PCM supportGUSTARD Femto clock system for maximum precisionDiscrete Class A low-pass filterProprietary network bridging systemIncludes remote controlNative 1-bit DSD for pure audioThe GUSTARD R26II features a native 1-bit DSD DAC and supports up to DSD2048 via the I2S interface. This enables an astonishing 32-fold increase in resolution compared to standard SACD (DSD64), delivering exceptional dynamic range, clarity, and richness of detail. By bypassing any internal PCM transcoding or DSP processing, an unadulterated signal path is ensured, preserving the full depth and atmosphere of the original recording. Whether you’re listening to high-resolution files or classic recordings, the R26II reproduces music with unparalleled realism and depth.Advanced R-2R Resistor NetworkAt the heart of the R26II lies a fully discrete R-2R resistor network, a purist approach to digital-to-analog conversion. Unlike delta-sigma DACs, which rely on high-frequency modulation and noise shaping, R-2R directly converts digital signals to analog without delay, delivering a clearer, more natural sound. This design eliminates digital artifacts and ensures a highly precise and organic listening experience. The result is a sound character that is rich, harmonious, and unmistakably analog. GCLK-02 Clock ModuleThe GUSTARD R26II is equipped with high-precision GUSTARD femto-clock technology. The GCLK-02 clock module uses advanced PLL technology to achieve a synchronization accuracy of less than 1 Hz, thereby ensuring the highest precision. By adjusting the output frequency via a precise feedback mechanism, it ensures outstanding stability and accuracy of both the frequency and phase of the clock signal.26-bit R2R DAC module derived from the R30It utilizes the advanced decoding technology from Gustard’s flagship R30 and delivers exceptional linearity, natural timbre, and the organic sound character for which R2R architecture is known—now with enhanced 26-bit processing for a superior dynamic range.Fully Discrete R2R Ladder ArchitectureThe true resistive ladder DAC design eliminates the digital harshness of delta-sigma converters and delivers a smooth, analog-like sound with exceptional musicality and a three-dimensional soundstage.Advanced Saier Network BridgeThe enhanced network streaming system ensures stable, high-quality audio transmission over Ethernet and supports all common streaming protocols and services.Bluetooth 5.1 ConnectivityThe Bluetooth 5.1 standard offers improved range, stability, and lower latency compared to earlier versions—perfect for wireless streaming from smartphones and tablets.Support for DSD512 and PCM 768 kHzSupports the highest-resolution audio formats, including native DSD512 (22.5792 MHz) and PCM up to 768 kHz/32-bit, ensuring compatibility with all high-resolution audio sources.Comprehensive digital inputsUSB, optical (TOSLINK), coaxial (SPDIF), AES/EBU, and network streaming inputs offer maximum flexibility for connecting all your digital sources.Balanced XLR and RCA OutputsBoth balanced XLR and unbalanced RCA analog outputs enable seamless integration into any audio system, from desktop setups to high-end components.High-Quality Power Supply DesignUpgraded capacitors and an optimized power supply circuit minimize noise and interference, creating a completely silent background that brings out even the quietest musical details.Precision Metal ChassisThe robust aluminum construction provides excellent electromagnetic shielding and heat dissipation while ensuring an elegant, professional appearance.Remote Control IncludedThe convenient wireless remote control allows for easy input selection, volume control, and adjustment of settings from your listening position.Dual Toroidal Transformers for Clean Power SupplyThe R26II features two independent toroidal transformers that provide separate power supplies to both the digital and analog sections of the DAC. These high-quality transformers isolate the D/A conversion process from harmful electromagnetic interference and crosstalk, ensuring a clean and stable power supply. Combined with multi-stage filtering and independent power supplies, this results in extremely low noise, an extended dynamic range, and a clear, distortion-free sound.Proprietary Network Bridge SystemDeveloped in collaboration with CelAudio, the GUSTARD R26II features a proprietary network bridge system. This specially developed streaming module is designed from the ground up for uncompromising digital transmission.

Dual ES9039SPRO DACDual ES9039SPRO chipsDSP Autonomous digital filteringFPGA programmable logic chipGCLK-02 clock moduleHybrid IV conversion and analog low-pass filter circuitsTwo ES9039SPRO chipsThe Gustard X26III features two ES9039SPRO chips for outstanding digital-to-analog conversion, with one chip dedicated to each channel (left and right) to achieve precise stereo sound. Independent power supplies and grounding for each chip ensure minimal interference and deliver a clean, detailed, and impressive audio experience. DSP Digital FilterThe DSP Digital Filter uses a high-performance solution based on Analog Devices’ SHARC digital audio-specific DSP platform. Its primary goal is to reduce in-band aliasing noise in the digital domain. By upscaling and shaping the raw digital audio stream, this filter enhances overall sound quality. Key technical features include an anti-aliasing noise algorithm and high-precision 64-bit floating-point operations, which ensure optimal performance and clarity.FPGA Programmable Logic ChipThe programmable FPGA logic chip incorporates exclusive technologies, including digital integrated circuits with custom logic functions, clock management, second-stage PLL digital shaping, DOP demodulation, and PCM/DSD Depop switches. These innovations form a solid foundation and ensure outstanding sound quality and optimal performance. GCLK-02 Clock ModuleThe GCLK-02 is a high-performance clock frequency synthesizer that uses advanced PLL (Phase Locked Loop) technology to ensure the stability and accuracy of the clock signal. It offers flexible clock options, allowing users to choose between a local clock source or an external 10-MHz clock signal. This design significantly reduces the impact of front-end clock performance on the overall system and minimizes dependence on the performance of front-end audio devices. Hybrid IV Conversion and Analog LPF CircuitsThe concurrently developed Hybrid IV conversion circuit, which meets the high current requirements of the ES9039SPRO chip, ensures optimal performance. The analog LPF circuits use discrete Class-A components, which allow for precise tuning and greater flexibility compared to integrated circuits. This approach minimizes distortion and delivers a warm, natural sound with low noise. Through careful component selection and tuning, the circuits enhance overall sound performance and provide a rich and realistic listening experience.Network Bridge System Developed Entirely In-House in Collaboration with CelAudioThe Network Bridge System is designed with a focus on music playback. Unnecessary hardware is removed to restore the true nature of the sound. It is based on the CelWare 3.x music playback system and combines optimized hardware and software with a Linux kernel tailored for I/O performance. This design prioritizes dynamic music playback, minimizes latency and jitter during audio data transmission, and enhances audio playback performance. The software also manages playback applications and can shut down unused bridge systems to maximize playback efficiency.USB Interface with XMOS XU216The USB interface features the XMOS XU216 chip, which supports PCM768k and DSD512 and ensures high-quality audio performance with minimal latency.Independent Power Supply and Signal IntegrityIt features independent voltage stabilization, multi-stage filtering, and excellent separation of the left and right channels to prevent interference. Two high-quality toroidal transformers supply power to the digital and analog circuits separately, ensuring complete isolation. Multiple power supply groups operate independently of one another to ensure a stable and complete power supply.