The Fender Rumble 15 is a compact bass amplifier with adjustable volume, bass, mid, and treble controls, as well as an AUX input and a headphone jack. There are no defects. There are no major noticeable stains or scratches, but please understand that this is a used item before purchasing. - Brand: Fender - Model Name: Rumble 15 - Input Terminals: INPUT - Volume Control: VOLUME - Bass Control: BASS - Midrange Control: MID - Treble Control: TREBLE - AUX Input: AUX IN - Headphone Jack: PHONES Thank you for viewing.