Boss MD-500 Modulation, Multi-effect pedal for electric guitar, 12 classic modulation effects, A/B simultaneous mode for using 2 patches at the same time, Output assignment: mixed or split A/B, Insert loop function allows for a free choice of effect placement, Large graphic LCD display, 297 storage locations, Buffer or true bypass selectable, Controls: mode - rate / value - depth - effect level - parameter 1 - parameter 2, Switches: up - down - exit - edit, Footswitches: A - B - TAP / CTL, Power supply with 4 AA batteries or a 9 V DC power supply (not included - corresponding power supply: Article Nr #102842#), Dimensions: (W x D x H) 170 x 138 x 62 mm, Weight: 1000 g@+*Connectors:*@+@+, Input A & B: 6.3 mm jack, Output A & B: 6.3 mm jack, CTL / Expression, USB, MIDI input and MIDI output, 9 V DC power supply connection (coaxial socket 5.5 x 2.1 mm - negative polarity inside)