Lehle 1AT3 SGoS ABC Programmable Switcher with Loop

The Lehle 1AT3 SGoS is a programmable true bypass switcher that routes signal between three amplifiers with active pop-and-click suppression. Gold-plated relay contacts switch both signal and ground simultaneously, eliminating hum loops when toggling between outputs A, B and C. The unit accepts MIDI programme change commands for remote control, or operates as a standalone switcher with intuitive onboard programming via its slender TRS remote socket.

Output C doubles as an effect loop for amplifier B through the jack socket C‒B configuration, removing unwanted effects from the signal path when required. Output A accommodates a tuner connection that stays outside the main signal chain. The TRS remote socket enables direct communication with other SGoS switchers via stereo patch cable, or connects to MIDI controllers for integration into larger rigs. True bypass operation maintains signal integrity across all three outputs, with relay switching that actively suppresses transient noise during amp changes.

Features

• Programmable true bypass switcher routes signal between three amplifiers
• Gold-plated relay contacts switch signal and ground simultaneously
• Active pop-and-click suppression eliminates transient noise during switching
• Output C functions as effect loop for amp B
• Output A accepts tuner connection outside main signal chain
• TRS remote socket communicates with SGoS switchers via stereo cable
• MIDI programme change commands enable remote control operation
• Standalone programming through intuitive onboard interface without external devices