Boss RV-500 Reverb, Multi-Effect Pedal for Electric Guitar, 12 Classic reverb effects, A/B Simultaneous mode to use 2 patches at the same time, Output assignment: Mixed or split A/B, Selectable Carryover function to maintain the reverb tails when switching or bypassing, Large graphic LCD, 297 Programmable presets, Selectable buffer or true-bypass, Controls: Mode - Rate/Value - Depth - E.Level - Param 1 - Param 2, Switches: Up - Down - Exit - Edit, Foot switch: A - B - TAP/CTL, Power supply with 4 AA batteries or a 9 V DC power supply (not included - suitable power supply available under: Article Nr #102842#), Dimensions: (W x D x H) 170 x 138 x 62 mm, Weight: 1000 g@+*Connections:*@+@+, Entrance A&B: 6.3 mm jack, Output A&B: 6.3 mm jack, CTL/Expression, USB, MIDI In and MIDI Out, 9 V DC Power supply connection (coaxial socket 5.5 x 2.1 mm - negative pin inside)