NUX guitar amplifier with drum function, featuring gain and tone adjustments. - Brand: NUX - Model: Mighty light - Features: Drum function - Input: 1/4 inch input - Adjustment knobs: Gain, Volume, Tone, Delay - Power: AC adapter or battery powered Thank you for viewing. The DC9V power supply and batteries both work without issue. Bluetooth connection, app connection, and guitar input all work perfectly. This listing is for the amplifier unit only.