BOSS IR 2 Amp Emulator and Cabinet IR Loader - Effect Pedal for Electric Guitar and Electric Bass Compact amplifier simulator and impulse response loader 11 Amplifier types with first-class speaker IR support from Celestion Digital Classic tone stack control plus ambience setting Two amplifier channels switchable via button or external foot switch Specific software (Mac/Win) for IR data loader and system settings Controls: Ambience bass level middle gain treble amp preset LED: Effect On Foot switch: Effect Bypass Input: 6.3 mm jack Channel select: 6.3 mm jack Return: 6.3 mm jack Output A (mono) and B: 6.3 mm jack Send: 6.3 mm stereo jack Headphone: 3.5 mm stereo jack Power supply connection: Barrel connector 5.5 x 2.1 mm centre negative Power consumption: 300 mA Power supply: 9 V battery or a 9 V DC power supply (not included) Suitable optional power supply: Art. no. 409939 (not included) Dimensions (W x D x H): 73 x 129 x 59 mm Weight: 450 g