Order code: 1013
Gold-plated Relays
The signal from the pickups of an electric guitar or bass is so weak that poor-quality cables, cold joints and cheap contact materials ruin your sound. Switch contacts need to be made of special materials to permit loss-free switching of these low-level signals. All Lehle switchers feature special relays and slide switches with gold-plated contacts for totally reliable, absolutely zero-loss switching.
Switching precise, swift and quiet
Swift and precise switching as between different instruments, effects loops or amps is essential in many live setups. To ensure this almost silently and wear-free, we have designed a finely tuned control system with a self developed spring located between the foot switch, our famous mushroom head, and the actual sensing device on the circuit board. A processor based on the ARM Cortex-M technology controls the switching operation very fast and precisely. While a conventional switch can handle a maximum of 20,000 switching operations, the interplay of the components used here enables a service life of 2 million switching operations. A hundred times more!
LEHLE Footswitch
The easy-action mushroom-shaped buttons characteristic of LEHLE products are mounted in the cover, so that your foot pressure is transmitted indirectly only, via a spring. Thus the electronics board is not exposed to mechanical loads, making your LEHLE virtually indestructible and guaranteeing years of trouble-free switching.
Adjustable Gain
Adjustment of volume or distortion using a gain controller is a vital feature in many situations. The gain controllers on the corresponding Lehle products feature black anodized aluminium knobs set back into the housing so that they can be easily fingertip rotated but keep their settings during performances and transportation.
MIDI interface
By means of the MIDI interface, control information can be exchanged. All LEHLE products with the MIDI symbol are able to be networked with external equipment, in order to control it and/or be controlled.
Many effects units feature stereo outputs. Or: instruments frequently have two pickup systems, e.g. a combination of conventional magnetic and Piezo types, to emulate an acoustic sound. Lehle accessories are ideal for trouble-free routing of such dual-channel stereo signals. All stereo-capable Lehle products are, of course, also suitable for mono operation.

There can't be anyone, anywhere, who doesn't know what a drag it can be swapping cables when changing instruments during a gig! So eliminate it - with the LEHLE 3AT1 SGOS! This True Bypass pedal switches the signals from magnetic and piezo pick-ups just as free of losses and background noise as it does line signals. The secret is in its gold-plated-contact relays and its active pop-and-click suppression. Any differences in level can be ironed out, and Inputs A and B lowered relative to C.
You can also feed signals from totally different sound sources, such as keyboards and CD/MP3 players, to an amp or a PA channel. All inputs and outputs, plus the internal signal path, are stereo. Press the active footswitch again to route the signal to the second output, and thus to an instrument tuner, another amp, or a mixing console channel.
The LEHLE 3AT1 SGOS can be remote controlled using MIDI program change commands. You can also network the unit with other Lehle SGoS switchers via a stereo jack socket. Cable swapping to change instruments? History, when you use the LEHLE 3AT1 SGOS!

Q: How do I program and use the MIDI functionality of the LEHLE SGoS pedals?
A: There is a blog article about the general procedure: https://blog.lehle.com/2017/09/27/how-to-program-a-lehle-pedal/
Q: What does SGoS stand for?
A: TRS socket for connection with other LEHLE SGoS switchers and external MIDI equipment for synchronization. SGoS switchers can receive MIDI program change commands and are very easy to program, they can also send MIDI program change commands and function as a MIDI controller.
Q: Can the LEHLE 3AT1 SGoS be used to switch between 3 totally different instruments?
A: Yes, 2 of the 3 inputs feature a level control for volume adjustment, all sockets and signal paths are fully stereo, this way stereopreamps, keyboards or synthesizers can be connected.
Q: Can both outputs of the LEHLE 3AT1 SGoS be used simultaneously?
A: No, to guarantee hum free operation a seperate isolation will be required like the P-SPLIT, LITTLE DUAL or DUAL SGoS.
Weight 645 g
Length 103 mm / 4"
Width 156 mm / 6.1"
Overall height 47 mm / 1.9"
Supply voltage 8 - 20 V DC
Current consumption 97 mA
Premier Guitar 2009.08
Brian Barr
I've never come across gear of this type that offers as much functionality between each and every unit, and with the simplist MIDI programming I've ever encountered. These pedals improved my tone and breathed new life into a growing pedalboard setup.
Gitarre & Bass 2008.08
Ebo Wagner
LEHLE 3at1, 1at3 & DUAL SGoS
Next generation of High-Tech-Signal-Routing : once again LEHLE stands out from competitors with the new revised product series. Something similar in regards of signal integrity, versatile and easy to handle in one, can't be found anywhere else on the market. Since the LEHLE switchers are mechanically super-solid and well made there can only be one conclusion : the price-performance-ratio is very healthy.

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I have the following questions on the product LEHLE 3AT1 SGOS (Order code: 1013)
Joachim Joki Schaller
Tel +49 2855 850070