Digital-to-analogue conversion is handled by one ESS ES9039PRO DAC per channel, resulting in more precise stereo imaging and more balanced operation.

The dual mono design is complemented by independent power supplies and separate grounding systems, creating favourable conditions for low noise, wide dynamic range and precise channel separation.

At the heart of the digital signal processing is the Analog Devices SHARC DSP platform, which manages digital filtering and signal processing algorithms. Its role is to prepare the digital data stream for D/A conversion with the highest possible precision.

The DSP employs advanced noise-shaping and digital filtering methods that reduce unwanted side effects generated during digital processing. As a result, the D/A converter receives a cleaner and more precisely processed signal.

Gustard’s proprietary FPGA processor is one of the central components of the digital signal path, ensuring stable system operation by coordinating clock management and data stream processing.

The programmable architecture enables fine-tuning of digital processes, reducing jitter while making digital signal processing more precise and predictable.

The X26III uses Gustard’s GCLK-02 clock module to ensure stable digital timing. An accurate clock plays an important role in digital signal processing by reducing the possibility of timing errors.

The device can also accept an external 10 MHz reference clock, allowing a professional master clock to be integrated into the system. This enables even more precise synchronisation in systems where digital timing is particularly important.

D/A conversion is followed by a fully discrete Class A analogue output stage. The circuit, built from individual components, provides greater freedom to optimise each stage than integrated solutions.

The carefully designed analogue stage aims to keep noise and distortion low throughout the entire signal path. The discrete design also enables fine-tuning of the individual circuit sections.

The device uses separate toroidal transformers for the digital and analogue circuits. The isolated power supplies reduce interaction between the different circuit sections and provide a stable operating environment.

Multiple separate power rails and multi-stage filtering help the digital and analogue stages operate independently and without interference.

The Gustard X26III uses a proprietary network bridge system optimised specifically for music playback. The Linux-based platform focuses on stable, low-latency handling of the digital data stream.

The device supports Roon Bridge, AirPlay, UPnP and HQPlayer NAA protocols, making it easy to integrate into a variety of network audio systems. The firmware can be updated over the network, while the settings can also be accessed through a web browser.

The device features USB, AES/EBU, coaxial, optical, IIS and LAN inputs, allowing a wide range of digital audio sources to be connected directly. The SD card slot and USB-C port for firmware updates further enhance the system’s flexibility.

The XMOS XU216 USB audio controller supports high-resolution PCM and native DSD playback via USB and IIS connections, while the other digital inputs provide broad compatibility with conventional digital audio sources.