2 Channel Guitar Amp In A Pedal - Class D PAM8610 with a preamp. Guitar - Pedal - WGS ET65, mix of camera mic and condenser mic. More info: http://jameslow.com/2016/01/09/2-channel-guitar-amp-in-a-pedal/
I'm powering it with a Mooer 2000mA power supply, but a one spot or anything over 1000mA should work, and it should take anything up to 12V.
I did another video of just the board on it's own, with the preamp separate, and there wasn't nearly as much hum. Must be something to do with the tightness of the components inside.