I'm selling this because I haven't had much chance to use it since I bought it! I've used it about 4 times. The PG-10 is a multi-functional amplifier for guitar and bass, equipped with controls for sound quality adjustment. - Model Name: PG-10 - Function: Guitar/Bass Amplifier - Controls: INPUT, GAIN, LEVEL, BASS, TREBLE, AUX IN, PHONE, POWER - Design: Black exterior, gold control panel Thank you for looking.