For Qun mk2 users: Tuned Lyrat board

This item includes ESP32 lyrat board which is the base board of Qun mk2, with modifications. The modification improves Line-in quality to get flat frequency response. It's great when you do sampling/resampling a lot.

This is not needed when your Qun mk2 comes with v4.99 firmware or later. Or you can examine the board physically. For more information, please check #mod channel on our Discord server.