Got the module and started testing it. It’s easy to set up, BT pairing and LDAC playback work great. However I noticed that the output volume (headphones) is much lower compared to USB. I use a pair of Yamaha HPH-MT8. With USB connection and in the high gain setting, I have a reasonable headroom, but with Bluetooth, it just runs out of juice, I’m at max volume most of the time. Note that I don’t apply any negative gain (no EQ or other DSP).
@Gouwa is this a bug? Or is it because the device has to power the BT module, so the output power goes down?