The Lehle 1at3 SGoS is a programmable True Bypass switcher that lets you switch backwards and forwards between up to three amplifiers, when you want, as often as you want. In combination with jack socket CB, output C can also be used alternatively as an effect loop for amp B, excluding all the effects you don't currently need from the signal path. A tuner can also be connected to output A, taking it, too, out of the signal chain.Like all members of the SGoS family, the Lehle 1at3 SGoS can also be programmed unbelievably easily and intuitively. The slender, TRS format remote socket assists with programming, and can be used, via a stereo patch cable, to communicate with other SGoS switchers, or for direct contact with MIDI controllers. The Lehle 1at3 SGoS can be programmed as a stand-alone unit, or remote controlled using MIDI program change commands. No hum or ground loops. Condition: This unit is brand new, fresh from the factory. Youre purchasing from an authorized Lehle dealer. The item "Lehle 1at3 SGoS 1@3 True-Bypass Switcher" is in sale since Friday, February 6, 2009. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Other Guitar Effects Pedals". The seller is "visionguitar" and is located in San Jose, California. This item can be shipped worldwide.