8 cores up to 500MIPS, compatible with USB 2.0.
Ultra-low noise, high PSRR LDO designed to power Hi-Fi applications.
High-quality RCA connectors, let you enjoy audio with delicate, clear, powerful and rich sound details.
ESS ES9038Q2M DAC
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
GENERIC AND VIM EDITIONS
FLEXIBLE I/O SUPPORTS DEVELOPMENT
Khadas aims to gradually realize the ideas and dreams of makers to help them grow. The two versions of the Tone Board's RCA output interface are the same, both have 2 RCA for analog output @ 2.0Vrms, and 1 RCA for S/PDIF input or output.
x1 30-pin FPC connector for 8-channel analog output expansion
x2 10-pin FPC connectors for OLED display and I2S expansion
x1 40-pin female connector for VIM
x1 20-pin SMT header for debugging XMOS and VIM.
Users can directly connect their Tone Board to the PC via the USB-C interface, and the Tone Board is the ideal choice for audio developers. Khadas' New VIM Heatsink can also be used with VIM and Tone Board.
TONE BOARD SUPPORTS MULTIPLE OSES
 Android supports only 44.1KHz output due to the Sample Rate Conversion(SRC) resampling implementations.
 Will also support other Single Board Computers (SBCs).
Excellent PCB design
Reasonable PCB stackup and layout
4-layer immersion gold process
Excellent analog signal quality and power integrity
Tuning with professional instrument APx555
High-performance modular two-channel audio analyzer
Latest performance and versatility testing
Thanks to all music enthusiasts who provided us with valuable feedback!