As for DAC chip, TOPPING used a single ESS ES9038QM DAC chip inside the D10s. If the name seems familiar, it’s because TOPPING adopted two of those chips in a dual configuration in their excellent DAC.
The ES9038QM DAC chip from ESS technologies is an outstanding performer with low power consumption. TOPPING utilizing a single chip in the D10s allows the DAC to be powered solely using USB, while at the same time enabling the THD N @1kHz to reach an extremely low level of just 0.002%! Impressive!
XMOS XU208 USB Chip
employed the latest XMOS XU208 USB chip for the USB decoding interface. While the USB interface is absolutely class 2 compliant (no need to install any drivers), installing the customized Thesycon ASIO drivers allows you to decode higher sample rates and DSD.
Supported Formats
The can decode up to 32-bit 384 kHz PCM and native DSD256 via USB, and up to 24-bit 192 kHz PCM and DSD64 via its optical/coaxial input.
Automatic Power On/Off Feature
Powered solely by USB, the TOPPING D10s can automatically power on/off simultaneously with your PC or laptop. This feature allows you to considerably conserve your device’s battery and remove any need to plug/unplug your DAC from your source.
USB To Optical/Coaxial Converter
One distinguishing feature that sets the D10s apart from any of the competition‘s offerings is its ability to convert its USB input to optical/coaxial output. This feature alone is worth the DACs asking price as it provides you with excellent compatibility and connectivity, allowing you to connect your DAC to a broader range of devices.
OP-AMP Rolling
The op-amp used in the D10s is both swappable and socketed. Therefore, professional users can use an IC extractor or pliers and swap the included op-amp with a different op-amp to change the sound.