Carl Martin Octaswitch Plug in up to eight effects into the eight effects-loops on the back of the switcher Two External Switching jacks allow you to use two amplifiers and/or switch channels on those amps Bypass Switch allows you to completely bypass all eight pedals for the clean sound of your amp Turn on or off the numbered switches in each of eight DIP Bank switches, and determine which effects you wish to use simultaneously in each Bank Blue LED for every effects loop used and for each Bank 100% True-bypass, impedance free, gold relays so you can run any of your pedals