This model is discountinued. Look at the 9018 model instead: https://hifimediy.com/Sabre-9018-DAC
The Hifimediy U2 Asynchronous DAC was developed by DIY (do it yourself} enthusiasts in the purpose of making a really good but cheap dac that could compete against regular commercial DAC’s costing many times as much. It utilises a DAC chip from ESS Technology, whose DAC chips is highly regarded. The ES9023 chip is their simplest DAC chip which keeps many of the features of their bigger brothers at a minimal cost.
– Quality TYCO gold plated headphone connector
– The U2 can also work as Asynchronous USB to optical converter when not using the analog output.
Asio drivers is only recommended for advanced users, and is not required for normal audio playback.
It can be downloaded here.