Lightweight, portable and battery-powered headphone amplifier and mixer for guitar and bass that is perfect for jamming, rehearsal and practice and provides a 6.3mm Hi-Z clinker instrument input. It also features an AUX-in port that allows user to use any iOS device for effects, or play along with the music library. Two chain connections allow for connecting up to eight units for jam sessions, while the four rotary knobs (Phones, Input, Pan, Me) perfectly blend the signals. The unit is powered by two AA batteries (not included) and comes supplied with 3.5mm/4-pin cable. Dimensions: 103 x 42 x 103 mm.