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Professional Hi-Fi DAC for Audiophiles

XMOS XU208-128-QF48

8 cores up to 500MIPS, compatible with USB 2.0.

Ultra-Quiet Power

Ultra-low noise, high PSRR LDO designed to power Hi-Fi applications.

RCA Connector

High-quality RCA connectors, let you enjoy audio with delicate, clear, powerful and rich sound details.


The industry's highest performance 32-bit mobile DAC with unprecedented dynamic range and ultra-low distortion.

Accurate Low-Noise Clock

Ultra-low phase noise crystal oscillator with excellent phase noise characteristics.

Compatible Audio File Formats

APE, FLAC, OGG, WAV, ACC, ALAC, MP3, WMA, DSD, and more!


The Khadas Tone Board is a USB external Hi-Fi sound card specially developed for Khadas VIM SBCs by Khadas. Its superior performance and compatibility take the audio/visual experience to a whole new level. We integrated the advanced XMOS multi-core RISC micro-controller and ESS flagship 32-bit stereo mobile audio DAC ES9038Q2M into a small PCB. At the same time, we selected three independent high-performance OPAs and four ultra-low phase jitter oscillators for the audio system. Each power path is controlled by a separate ultra-low noise CMOS linear regulator with an OPA of ± 5.5V. In addition to the powerful hardware configuration, we also maximize the performance through excellent PCB design.


Data from ESS professional labs