The Gustard R26 is a high-performance fully-discrete R2R DAC with built-in network streaming and Bluetooth, featuring USB, I²S, AES/EBU, coaxial and optical digital inputs with balanced XLR and single-ended RCA outputs. It delivers natural, musical R2R decoding in a compact desktop form factor with comprehensive connectivity. Why it stands out Fully Discrete R2R Architecture The R26 uses a fully-discrete R2R resistor ladder network with hand-matched 0.01% precision resistors, delivering the natural, non-oversampling sound that R2R DACs are prized for — with exceptional midrange clarity, smooth treble and natural bass response. Built-In Network Streaming & Bluetooth Integrated network streamer supports Roon Ready, AirPlay, DLNA and UPnP for wired network playback. Bluetooth 5.0 connectivity provides convenient wireless streaming from mobile devices with high-quality audio codecs. High-Resolution Support Supports PCM up to 32-bit/768kHz and native DSD up to DSD512 (DSD256 DoP) via USB, I²S and LAN inputs. AES/EBU, coaxial and optical inputs support PCM up to 24-bit/192kHz and DSD64 DoP. MQA decoding is supported for streaming services. Comprehensive Connectivity USB-C and USB-B inputs, I²S (HDMI), AES/EBU, coaxial and optical digital inputs cover every source. Balanced XLR (5.0Vrms) and single-ended RCA (2.5Vrms) analog outputs connect to any amplifier or preamp. 10MHz external clock input allows synchronization with high-end clock sources. Best for Mid-range two-channel systems seeking R2R DAC character Listeners who want both wired network and Bluetooth wireless streaming Desktop or compact audio systems Systems with balanced XLR or single-ended RCA amplification Not ideal for Systems requiring built-in headphone amplification Listeners who prefer the analytical character of ESS/AKM DAC chips Flagship-level systems that may benefit from the R26II or R30 Specifications Architecture Fully discrete R2R ladder PCM Up to 32-bit/768kHz (USB/I²S/LAN), 24-bit/192kHz (AES/Coax/Opt) DSD Up to DSD512 native (USB/I²S/LAN), DSD64 DoP (AES/Coax/Opt) MQA Supported (full decoder) Bluetooth 5.0 Digital Inputs USB-C, USB-B, I²S (HDMI), AES/EBU, Coaxial, Optical, LAN, Bluetooth Clock Input 10MHz BNC Analog Outputs Balanced XLR (5.0Vrms), Single-ended RCA (2.5Vrms) Frequency Response 20Hz-20kHz / ±0.2dB Streaming Roon Ready, AirPlay, DLNA, UPnP Power AC 115V/230V 50/60Hz, <60W Dimensions W330 × D260 × H65mm Weight 7kg (packaged) FAQ Q: What is the difference between R26 and R26II?A: The R26II is an upgraded version featuring the GUSTARD-GCLK-02 clock module, improved digital filtering, Bluetooth 5.1 LDAC and enhanced overall performance. The original R26 remains an excellent R2R DAC with MQA support and comprehensive connectivity. Q: Does the R26 support MQA?A: Yes, the R26 features full MQA decoding for compatible streaming services such as Tidal. Q: Can I use an external word clock with the R26?A: Yes, the R26 has a 10MHz BNC clock input for synchronization with external high-end clock sources.

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The Gustard U26 is a high-performance USB digital interface (DDC) designed in collaboration with Amanero Technologies. It transforms USB input into ultra-precise digital output for your DAC through IIS (I²S), AES/EBU or coaxial connections, with an SC-cut OCXO master clock and K2 high-performance PLL synthesis for femtosecond-level jitter performance. Why it stands out Gustard × Amanero Custom USB Engine Developed in collaboration with Amanero Technologies, the U26 uses a custom UAC2 USB audio engine powered by an ARM Cortex-M7 (i.MX RT1011) processor. The ASIO driver with buffer/latency controls ensures optimal performance for Windows-based audio systems. SC-Cut OCXO Master Clock An SC-cut OCXO (Oven-Controlled Crystal Oscillator) master clock combined with the K2 high-performance PLL synthesis (98.3040/90.3168 MHz) achieves ultra-low jitter at the femtosecond level, ensuring precise clocking for your DAC regardless of the source clock quality. High-Resolution Support Supports PCM up to 32-bit/384kHz and DSD up to DSD256 (DoP) via coaxial and AES/EBU outputs. IIS (I²S) output supports even higher rates depending on your DAC's capabilities. A 10MHz BNC input allows synchronization with external clock sources. Linear Power Supply & Premium Build Linear power supply with audio-grade toroidal transformer, dual rectifier bridges, discrete regulation and ultra-low-noise LDOs, with 80,000µF primary filtering. Full aluminum alloy enclosure with EMI shielding. Digital outputs include IIS (HDMI), AES/EBU (XLR), coaxial (RCA) and a 10MHz BNC clock input. Best for Audiophiles with high-end DACs who want to improve USB input quality Systems where the computer's USB output is a bottleneck Listeners who want to add IIS (I²S) output to a USB-only source Setups requiring external clock synchronization (10MHz BNC input) Not ideal for Casual listeners — a DDC is a specialized component for serious audiophiles Systems where the DAC already has an excellent USB input (diminishing returns) Budget-conscious buyers Specifications USB Engine Gustard × Amanero custom UAC2, ARM Cortex-M7 (i.MX RT1011) Clock System SC-cut OCXO master clock + K2 PLL synthesis (98.3040/90.3168 MHz) USB Input USB Type-B (female), USB 2.0 PCM Up to 32-bit/384kHz (coaxial/AES), higher via IIS DSD Up to DSD256 (DoP) via coaxial/AES Digital Outputs IIS (HDMI), AES/EBU (XLR), Coaxial (RCA, 75Ω) Clock Input 10MHz BNC (50Ω, 0dBm-20dBm) Coaxial Output Level ≥500mV P-P @ 75Ω load Power Supply Linear PSU with toroidal transformer, 80,000µF filtering Power AC 115V/230V 50/60Hz, <15W Dimensions W330 × D260 × H65mm Weight 4.8kg (net), 6.3kg (packaged) FAQ Q: What is a USB digital interface (DDC)?A: A DDC (Digital-to-Digital Converter) takes USB input from your computer and converts it to standard digital outputs (IIS, AES/EBU, coaxial) with improved clocking, connecting to your DAC's digital inputs. It improves sound quality by isolating the DAC from computer noise and providing a cleaner clock signal. Q: Do I need a DDC if my DAC already has USB?A: If your DAC has a high-quality USB input (e.g., with XMOS interface), a DDC may provide diminishing returns. However, for DACs with mediocre USB inputs or for IIS (I²S) connection, a DDC can provide significant improvement. Q: Does the U26 require driver installation?A: The U26 uses UAC2 (USB Audio Class 2), which is natively supported by macOS and Linux. Windows requires the ASIO driver provided by Gustard/Amanero.

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The Gustard H26 is a fully-balanced discrete Class-A headphone amplifier and preamplifier designed for high-end headphone and speaker systems. With dual gain modes, balanced and single-ended headphone outputs, and XLR/RCA preamp outputs, the H26 delivers clean, powerful amplification with exceptional linearity. Why it stands out Fully-Balanced Discrete Class-A Design The H26 uses a fully-balanced discrete Class-A amplification circuit with hand-selected components, delivering the natural warmth and smoothness that Class-A operation is prized for, with exceptional linearity and low distortion across the entire frequency range. High Power Output Delivers up to 6W into 32Ω, 1576mW into 300Ω and 788mW into 600Ω, providing ample power for even the most demanding high-impedance headphones. Two selectable gain modes accommodate both sensitive IEMs and power-hungry full-size headphones. Comprehensive Inputs & Outputs RCA single-ended and XLR balanced inputs with selectable input sensitivity. Headphone outputs include 4-pin XLR balanced, 4.4mm balanced and 6.35mm single-ended. Preamp outputs (XLR and RCA, 100Ω output impedance) allow direct connection to power amplifiers or active speakers. Premium Build & Remote Control Solid aluminum chassis with premium components throughout. Frequency response extends to 80kHz (±0.1dB), SNR >123dB and channel crosstalk -123dB. Includes remote control for volume, input selection and gain switching. Best for High-end headphone systems, especially high-impedance full-size headphones Listeners who want both headphone amp and preamp functionality Systems with balanced XLR sources and headphones Listeners who prefer Class-A amplification character Not ideal for Portable use — this is a full-size desktop unit requiring AC power Systems needing built-in DAC (pair with a separate DAC) Budget-conscious buyers Specifications Amplification Fully-balanced discrete Class-A Output Power (Balanced) 6W @ 32Ω, 1576mW @ 300Ω, 788mW @ 600Ω Gain Modes Two selectable gain levels Headphone Outputs 4-pin XLR balanced, 4.4mm balanced, 6.35mm single-ended Inputs RCA single-ended (2-3Vrms, 4kΩ), XLR balanced (4-6Vrms, 8kΩ) Preamp Outputs XLR balanced & RCA single-ended (100Ω output impedance) Frequency Response 20Hz-80kHz / ±0.1dB SNR >123dB Channel Crosstalk -123dB @ 1kHz THD+N <0.0002% IMD <0.0003% Power AC 115V/230V 50/60Hz, ~30W Dimensions W330 × D260 × H65mm Weight 7kg (packaged) FAQ Q: Does the H26 have a built-in DAC?A: No, the H26 is a pure headphone amplifier and preamplifier. Pair it with a dedicated DAC such as the Gustard R26II or X26III. Q: Can the H26 drive sensitive IEMs?A: Yes, the low gain mode and low output impedance make the H26 suitable for sensitive IEMs as well as full-size headphones. Q: Can I use the H26 as a preamp for my power amplifier?A: Yes, the H26 features XLR and RCA preamp outputs with 100Ω output impedance, suitable for direct connection to power amplifiers or active speakers.

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The Gustard X26III is a flagship-level desktop DAC featuring dual ESS ES9039SPRO DAC chips in a fully-balanced configuration, with DSP autonomous digital filtering, FPGA programming logic and the GCLK-02 clock module. Built-in network streaming makes it a complete digital hub for high-end audio systems. Why it stands out Dual ES9039SPRO DAC Chips Two ESS ES9039SPRO chips in fully-balanced dual-mono configuration deliver exceptional dynamic range (>128dB), ultra-low THD+N (≤0.0001%) and precise channel separation (-132dB). The hybrid IV conversion and discrete analog LPF circuits ensure optimal analog output performance. DSP Autonomous Digital Filtering Analog Devices SHARC DSP handles autonomous digital filtering with multiple selectable filter profiles, letting you tailor the sound to your preference — from sharp linear-phase to slow minimum-phase rolloff. GCLK-02 Clock & FPGA Control The GUSTARD GCLK-02 clock module provides ultra-low jitter clocking, while the proprietary FPGA programming logic chip manages digital signal processing and interface control with precision and flexibility. Network Streaming & Full Connectivity Built-in network streamer with Roon Ready, AirPlay, DLNA and UPnP support. USB-B (XMOS XU216), I²S (HDMI), AES/EBU, coaxial and optical inputs cover every digital source. Balanced XLR (5.1Vrms) and RCA outputs connect to any amplifier. Best for High-end desktop or compact audio systems seeking flagship ESS DAC performance Listeners who want selectable digital filtering profiles Network streaming setups with Roon or AirPlay Systems with balanced XLR amplification Not ideal for Listeners who prefer R2R DAC character (see R26II or R30) Systems requiring built-in headphone amplification Budget-conscious buyers Specifications DAC Chips 2× ESS ES9039SPRO (fully-balanced dual-mono) DSP Analog Devices SHARC DSP (autonomous digital filtering) FPGA Proprietary FPGA programming logic Clock GUSTARD GCLK-02 clock module USB Interface XMOS XU216 PCM Up to 32-bit/768kHz DSD Up to DSD512 Digital Inputs USB-B, I²S (HDMI), AES/EBU, Coaxial, Optical, LAN Analog Outputs Balanced XLR (5.1Vrms), Single-ended RCA Dynamic Range >128dB SNR >126dB THD+N ≤0.0001% @ 1kHz Channel Crosstalk -132dB @ 1kHz Streaming Roon Ready, AirPlay, DLNA, UPnP, Spotify Connect Power AC 115V/230V 50/60Hz, <25W Dimensions W330 × D260 × H65mm Weight 7.5kg (packaged) FAQ Q: How does the X26III compare to the R26II?A: The X26III uses dual ESS ES9039SPRO chips for a detailed, analytical presentation with DSP digital filtering. The R26II uses fully-discrete R2R architecture for a warmer, more natural sound. Both are similarly priced and feature network streaming. Q: Does the X26III support MQA?A: MQA support may vary by firmware version. Refer to the latest specifications for confirmation. Q: Is the X26III Roon Ready?A: Yes, the X26III features built-in network streaming with Roon Ready certification.

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The Gustard R26II is a 26-bit fully-discrete R2R network streaming DAC with Bluetooth 5.1 LDAC, building on the acclaimed R26 platform with upgraded clock management, improved digital filtering and enhanced connectivity. It delivers natural, musical R2R decoding in a compact desktop form factor. Why it stands out 26-Bit Fully Discrete R2R Architecture The R26II uses a fully-discrete 26-bit R2R resistor ladder network with hand-matched components, delivering the natural, non-oversampling sound that R2R DACs are prized for — with exceptional midrange clarity and smooth treble. GUSTARD-GCLK-02 Clock Module The integrated GUSTARD-GCLK-02 synthesizer clock achieves ultra-low jitter performance at the femtosecond level, while preserving near-end performance of the reference clock. The high-precision divider ensures accurate frequency synthesis across all sample rates. Bluetooth 5.1 LDAC & Network Streaming Built-in Bluetooth 5.1 with LDAC support delivers high-quality wireless audio from compatible devices. The integrated network streamer supports Roon Ready, AirPlay, DLNA and UPnP for wired network playback. Comprehensive Connectivity USB-B, I²S (HDMI), AES/EBU, coaxial and optical digital inputs cover every source. Balanced XLR (5.0Vrms) and single-ended RCA (2.5Vrms) analog outputs connect to any amplifier or preamp. Includes remote control. Best for Mid-range two-channel systems seeking R2R DAC character Listeners who want both wired and Bluetooth wireless connectivity Network streaming setups with Roon or AirPlay Desktop or compact audio systems Not ideal for Systems requiring built-in headphone amplification Listeners who prefer the analytical character of ESS/AKM DAC chips Flagship-level systems that may benefit from the R30 Specifications Architecture 26-bit fully discrete R2R ladder Clock GUSTARD-GCLK-02 synthesizer clock module PCM Up to 32-bit/768kHz (USB/I²S/LAN) DSD Up to DSD512 (native), DSD256 (DoP) Bluetooth 5.1 with LDAC Digital Inputs USB-B, I²S (HDMI), AES/EBU, Coaxial, Optical, LAN, Bluetooth Analog Outputs Balanced XLR (5.0Vrms), Single-ended RCA (2.5Vrms) Frequency Response 20Hz-20kHz / ±0.2dB Streaming Roon Ready, AirPlay, DLNA, UPnP Power AC 115V/230V 50/60Hz, <20W Dimensions W330 × D260 × H65mm (including feet: 75mm) Weight 7.3kg (packaged) FAQ Q: What is the difference between R26 and R26II?A: The R26II features the upgraded GUSTARD-GCLK-02 clock module, improved digital filtering, Bluetooth 5.1 LDAC and enhanced overall performance compared to the original R26. Q: Does the R26II come with a remote control?A: Yes, the R26II includes a remote control for input selection, volume and filter settings. Q: Can I use the R26II as a preamp?A: The R26II has fixed-level outputs. For volume control, use your amplifier or preamp.

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The Gustard X30 is a flagship desktop DAC equipped with four ESS ES9039SPRO DAC chips in a fully-balanced dual-mono configuration, an ES9311Q dedicated linear regulator and a second-generation XMOS XU216 USB interface. With built-in network streaming, it delivers reference-level digital-to-analog conversion for high-end audio systems. Why it stands out Quad ES9039SPRO DAC Chips Four ESS ES9039SPRO chips arranged in dual-mono fully-balanced configuration deliver exceptional dynamic range, ultra-low distortion and precise channel separation. The ES9311Q dedicated linear regulator ensures clean, stable power to the DAC stage. Second-Gen XMOS XU216 USB Interface The upgraded XMOS XU216 USB audio interface supports PCM up to 32-bit/768kHz and DSD up to DSD512 natively, with ultra-low latency and robust driver support for Windows, macOS and Linux. Built-In Network Streaming Integrated network streamer with Roon Ready, AirPlay, DLNA and UPnP support lets you stream directly from your network without an external streamer. Ethernet and Wi-Fi connectivity provide flexible installation options. Premium Build & Full Connectivity Solid aluminum chassis with premium components throughout. USB-B, I²S (HDMI), AES/EBU, coaxial and optical digital inputs cover every source, while balanced XLR and single-ended RCA outputs connect to any amplifier. Best for High-end two-channel systems seeking flagship ESS DAC performance Listeners who prefer the analytical, detailed character of ESS chips Network streaming setups with Roon or AirPlay Systems with balanced XLR amplification Not ideal for Listeners who prefer the warmer character of R2R DACs Budget-conscious buyers Systems requiring built-in headphone amplification Specifications DAC Chips 4× ESS ES9039SPRO (dual-mono fully-balanced) Regulator ES9311Q dedicated linear regulator USB Interface XMOS XU216 (2nd generation) PCM Up to 32-bit/768kHz DSD Up to DSD512 (native & DoP) Digital Inputs USB-B, I²S (HDMI), AES/EBU, Coaxial, Optical, LAN Analog Outputs Balanced XLR, Single-ended RCA THD+N ≤0.0001% @ 1kHz Streaming Roon Ready, AirPlay, DLNA, UPnP Power AC 115V/230V 50/60Hz, <30W Dimensions W430 × D300 × H80mm (including feet) Weight 10kg (packaged) FAQ Q: How does the X30 compare to the R30?A: The X30 uses four ESS ES9039SPRO chips for a detailed, analytical presentation, while the R30 uses fully-discrete R2R architecture for a warmer, more natural sound. Both are flagship-level DACs. Q: Does the X30 support MQA?A: MQA support depends on firmware. Refer to the latest specifications for confirmation. Q: Is the X30 Roon Ready?A: Yes, the X30 features built-in network streaming with Roon Ready certification.

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The Gustard R30 is a flagship fully-discrete R2R network streaming DAC built around 27-bit resistor ladder architecture with an integrated OCXO oven-controlled crystal oscillator. It combines USB, I²S, coaxial, AES/EBU, optical and network streaming inputs with balanced XLR and single-ended RCA outputs for reference-grade digital-to-analog conversion. Why it stands out Fully Discrete 27-Bit R2R Architecture Every signal-path component is an individual surface-mount resistor, capacitor and op-amp hand-selected by Gustard engineers — no integrated DAC chip. The 27-bit R2R ladder delivers natural, non-oversampling character with exceptional midrange purity. Built-In OCXO Oven-Controlled Clock An ultra-stable clock source maintained at constant temperature inside a sealed chamber reduces jitter below 5ps RMS across all sample rates, even during long playback sessions where ambient heat affects standard oscillators. Native DSD1024 & PCM 1536kHz Supports native DSD up to DSD1024 and PCM up to 1536kHz via I²S, with DSD512 and 768kHz over USB. Three selectable digital filter modes — Linear Sharp, Minimum Slow and Super Slow — let you tailor the presentation. Network Streaming & Full Connectivity Built-in network streamer supports Roon Ready, AirPlay, DLNA and UPnP. USB-B, I²S (HDMI), AES/EBU, coaxial and optical inputs cover every digital source, while balanced XLR (5.1Vrms) and RCA (2.5Vrms) outputs connect to any amplifier or preamp. Best for High-end two-channel systems seeking reference R2R decoding Listeners who prefer natural, non-oversampling DAC character Network streaming setups with Roon, AirPlay or DLNA Systems with balanced XLR or single-ended RCA amplification Not ideal for Budget-conscious buyers — this is a flagship-level investment Listeners who need built-in headphone amplification Systems requiring MQA decoding (not supported) Specifications Architecture 27-bit fully discrete R2R ladder Clock Built-in OCXO oven-controlled crystal oscillator PCM Up to 1536kHz (I²S) / 768kHz (USB), 16-32bit DSD Up to DSD1024 (I²S) / DSD512 (USB), native & DoP Digital Inputs USB-B, I²S (HDMI), AES/EBU, Coaxial, Optical, LAN (RJ45) Analog Outputs Balanced XLR (5.1Vrms), Single-ended RCA (2.5Vrms) Dynamic Range >123dB SNR >121dB THD+N ≤0.00145% @ 1kHz Frequency Response 20Hz-20kHz / ±0.2dB Streaming Roon Ready, AirPlay, DLNA, UPnP Power AC 115V/230V 50/60Hz, <35W Dimensions W430 × D300 × H80mm (including feet) Weight 10kg (packaged) FAQ Q: Does the R30 have a built-in headphone amp?A: No, the R30 is a pure DAC/preamp. Pair it with a dedicated headphone amplifier or integrated amplifier. Q: Can I use an external word clock?A: The R30 has a built-in OCXO clock. External clock input depends on specific configuration — refer to the user manual. Q: Is Roon Ready included?A: Yes, the R30 is Roon Ready certified for seamless network streaming.

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