The BOSS IR-2 features an amp & cabinet simulator function, allowing for sound creation with its numerous control knobs. - Model Name: IR-2 - Function: Amp & Cabinet Simulator - Output Terminals: OUTPUT A (MONO), OUTPUT B - Input Terminals: INPUT - Control Knobs: BASS, MIDDLE, TREBLE, CH SEL, CHECK - Power: 9V Dry Cell Battery Type - Connection Terminals: 3 Jack Terminals Thank you for viewing. It will be shipped with the batteries removed. Used for about a year. There are many scratches and stains. Also, there are traces of double-sided tape, making it dirty. #boss #Roland #compact #guitar #electricguitar #effector #distortionpedal