GUSTARD R26 III DAC R2R Streamer Black

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The Gustard R26 III is an R2R-designed DAC and network player, designed to convert and distribute high-resolution audio signals within a demanding Hi-Fi system. It uses a discrete architecture combined with centralized clock management and segmented power supply to ensure temporal consistency and electrical stability suitable for the most advanced PCM and DSD formats.

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Reference : 21445
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1 649,00 €tax incl.

1 374,17 € tax excl.
Including 0,05 € for green tax

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Facturation France
SAV France

2 Years warranty
 
More info

Please note that this is not a standalone network player. It is compatible with only a few network protocols such as AirPlay, UpnP, as well as certain external applications such as Roon or HQPlayer NAA.


Gustard R26 III
DAC R2R Streamer Roon AirPlay UPnP Bluetooth 5.1 32bit 1536kHz DSD2048 Black

Gustard R26 III : Front view


The Gustard R26 III is an R2R-designed DAC and network player, designed to convert and distribute high-resolution audio signals within a demanding Hi-Fi system. It uses a discrete architecture combined with centralized clock management and segmented power supply to ensure temporal consistency and electrical stability suitable for the most advanced PCM and DSD formats.

Designed for network-oriented playback systems, multiple digital sources, or integration with audio servers, it combines R2R conversion, extensive network connectivity, and high-bandwidth digital interfaces, allowing playback and conversion to be centralized without the need for multiple devices.

Gustard R26 III: 26-bit DAC R2R

The Gustard R26 III's digital-to-analog conversion is based on a 26bit R2R resistor network, providing fully analog signal conversion. This approach is extended by a fully discrete Class A low-pass filter, which eliminates residual high-frequency components while maintaining constant bias across the stages, thereby limiting unwanted dynamic variations. Beyond PCM up to 32bit 1536kHz, the architecture allows native 1bit DSD processing, including up to DSD2048, without intermediate conversion, preserving the integrity of the original stream. For those who switch between formats, an anti-pop filter monitors PCM/DSD transitions, neutralizing parasitic transients to ensure silent and consistent switching in a high-resolution system.

Gustard R26 III : R2R circuit
Gustard R26 III : GCLK-02 clock

Gustard R26 III: GCLK-02 clock

To ensure perfect signal synchronization, the R26 III adjusts the output frequency based on a single clock signal. This same clock signal manages PCIe, network, and USB connections, ensuring overall consistency and optimal stability.

The GCLK-02 clock module uses a phase-locked loop capable of maintaining exceptional accuracy with 1Hz locking, ensuring ultra-precise clock signal management. A 50Ω impedance BNC input also allows connection to an external 10MHz clock for even greater accuracy.

Gustard R26 III: Network connectivity

Based on an audio-optimized Linux kernel, the R26 III's CelWare 3.x software supports various protocols such as Roon Bridge, AirPlay, HQPlayer NAA, UPnP, Spotify, and more. Users can enable or disable these features via a browser by simply entering the address ‘//r26.local’.

Gustard R26 III : Network connectivity
Gustard R26 III : Bluetooth chip

Gustard R26 III: Bluetooth 5.1

Thanks to the integration of a Qualcomm QCC5125 Bluetooth 5.1 chip, the R26 III offers wireless connectivity supporting LDAC, aptX, AAC, and SBC codecs.

Gustard R26 III: XMOS interface

The Gustard R26 III is equipped with an XMOS XU216 USB interface, supporting signals up to PCM 768kHz and DSD512, for superior audio transmission.

Gustard R26 III : XMOS interface
Gustard R26 III : power supply stage

Gustard R26 III: Separate power supplies

The R26 III features two separate transformers to power the digital and analog sections separately, eliminating interference. Each channel is also equipped with dedicated filter capacitors, ensuring stable voltage and noise-free operation.

Gustard R26 III: I2S pinout

Gustard R26 III : Pinout I2S

Technical characteristics

Specifications
Product typeDiscrete DAC R2R
Inputs1x USB-B
1x RJ45
1x I2S (HDMI)
1x AES/EBU
1x Coaxial
1x Optical Toslink
1x SD card slot
1x USB-C (Firmware Update)
1x BNC (Clock signal)
Bluetooth 5.1
Outputs1x Single-ended stereo RCA
1x Balanced stereo XLR
Supported sampling ratesAES / Optical / Coaxial: PCM up to 24bit 192kHz, DoP DSD up to DSD64
USB / LAN: PCM up to 32bit 768kHz, Native DSD up to DSD512, DoP DSD up to DSD256
I2S: PCM up to 32bit 1536kHz, Native DSD up to DSD2048
USB compatibilityWindows 7/8/10/11
Mac OSX
iOS
Linux
Network protocolsRoon Bridge
AirPlay
HQPlayer NAA
UPnP
Spotify
Supported Bluetooth codecsAAC, SBC, aptX, aptX LL, aptX HD, LDAC
Frequency response20Hz-20kHz (±0.2dB)
Dynamic range> 117dB
Signal-to-noise ratio (SNR)> 122dB
Crosstalk< -134db @ 1khz
Total harmonic distortion more noise (THD+N)≤ 0.003% @1kHz
IMD≈ 0.008% @ 0dBfs
Output levelRCA: 2.5Vrms
XLR: 5Vrms
Output impedanceRCA: 100Ω
XLR: 100Ω
General
Supply voltage115-230V AC 50/60Hz
Consumption< 20W
Dimensions300 x 260 x 65mm
Weight5.5Kg
ColorBlack
Package1x Gustard R26 III
1x Remote control
1x Power cable
1x Bluetooth antenna
 
Data sheet
InputAES/EBU
InputUSB
InputOptical
InputRJ45
InputSD Card
InputClock (BNC)
InputSPDIF
InputBluetooth
InputI2S via HDMI
OutputRCA
OutputXLR
DAC / ADC ChipR2R LADDER DAC
Max sampling rateDSD2048
Max sampling rate1536kHz
ColorBlack
NetworkingYes
Remote ControlYes
Streaming services & Network protocolsAirPlay
Streaming services & Network protocolsHQPlayer NAA
Streaming services & Network protocolsSpotify
Streaming services & Network protocolsRoon / Roon Bridge / Roon Ready
Streaming services & Network protocolsUpnP
 
Delivery

We deliver all over France, and internationally.
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GUSTARD R26 III DAC R2R Streamer Roon AirPlay UPnP Bluetooth 5.1 32bit 1536kHz DSD2048 Black
The Gustard R26 III is an R2R-designed DAC and network player, designed to convert and distribute high-resolution audio signals within a demanding...

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