Voodoo Lab DBMPXS3P Dingbat Pedalboard PX Package - PX-8 Plus and Pedal Power 3 Plus8 true bypass audio loops using gold contact relays 1 button access to 36 customizable preset effects combinations Instantly recall 128 preset combinations of effects via MIDI Compatible with Ground Control Pro or any MIDI controller Insert point between loops 6 and 7 for volume pedals and more Output buffer preserves tone even over long cable runs Quiet Switching technology for lowest possible noise