Bastl Instruments Bestie, 5-Channel Stereo Mixer, Per channel mute button and level control with up to +20dB gain, Channel 3 functions as distortion/feedback channel if the input jack remains unused, Stereo headphone output with level control and pre/post switch: 3.5 mm jack, Inputs for channels 2/3/4: 3.5 mm stereo jack, Channels 1 and 5 can handle stereo and mono signals: 3.5 mm jack, Stereo mix output: 3.5 mm jack, Power supply via USB-C socket or batteries (4x type AA, not included), Dimensions (W x D x H): 101 x 69 x 51 mm