HipHopScribe
Headphoneus Supremus
I have tried with various Android devices like phone and tablet.
Not yet tested with Windows PC, I will try tomorrow.
Just tried it with my phone and you're right, max volume is much lower than PC or Bluetooth. This might have something to do with how Android handles USB audio devices, so it's possible an app like USB Audio Player Pro that bypasses Android default audio stack might fix the issue, but I don't have it installed currently so I couldn't test.