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Lehle Dual A/B Switcher

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Page last updated Jun 10, 2026

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Description

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The Lehle Dual enables you to switch between 2 amps or run your signal to both amps. The signal is routed directly (without semiconductors) via gold-plated relays to Output A or B or both. A is electrically isolated from B by means of a high-end (Lundahl) line splitter; humming loops are impossible, even if A and B are switched on simultaneously. The Lehle Dual can use any power supply between 8 and 20V with either polarity (AC or DC). The supply voltage is internally rectified and stabilized in order to guarantee trouble free operation. High-intensity LEDs behind a magnifying lens make it easy to read switching state (A and/or B) even under bright spotlights. External trim potentiometers make it possible to adjust Output A or B if both are engaged simultaneously. For example, gain (up to 6dB) can be trimmed back so that one amp gets hit harder than the other. All Lehle switchers are totally passive. To the purist, what this means is that the great tone you bought your particular tube amp for in the first place will not be compromised. Active switcher boxes (with their resultant change in impedance from high to low) cause an amp's crunch/distorted tone to become fuzzy. Lehle switchers maintain that unique interaction between guitar and amp, as if there is only a high-quality cable in-between.

Owner's manual

Lehle Dual A/B Switcher User Manual

Product specs

Analog/Digital	analog
Power	9V

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Lehle Dual A/B Switcher.

Features and functionality

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The Lehle Little Dual II includes polarity reverse and ground lift switches, and can split A/B output into stereo with a TRS cable.
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The Lehle Dual A/B Switcher operates passively, requiring power solely for its LED indicators, enhancing reliability and simplicity.
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Build quality

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Owners praise the Lehle Little Dual II for its high reliability and minimalist design, emphasizing its durable construction and German engineering.
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Value and pricing

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Despite its higher price, the Lehle Little Dual II is noted for delivering excellent value through its robust features and German-made reliability.
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Users in the U.S. mention that Lehle products are priced higher domestically, but better deals may be found on used units.
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Comparisons

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The Lehle Dual SGOS variant offers MIDI functionality, appealing to users needing advanced control in complex setups.
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Users often compare the Lehle switcher to Radial products, acknowledging Radial for robust build quality but highlighting Lehle's unique MIDI capability.
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The Lehle Little Dual is often compared with Radial's Twin City, both offering phase inversion and ground lift features, essential for dual amp setups.
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User experience

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It's noted that the Lehle switcher includes ground lifts, which are essential for eliminating hum in live or studio environments.
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Use cases and applications

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The Lehle switcher is ideal for those requiring a passive unit with essential features like ground lift, useful in dual amp configurations.
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The Lehle Little Dual effectively resolves phase issues when running both guitar and bass amps simultaneously, especially when using effects like a POG for bass-like tones.
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Dave Grohl

Guitarist, Drummer

Nirvana

Verified via Photo

In a photo from 2007, you can see the first generation Lehle Dual A/B Switcher on the top of Dave Grohl’s pedalboard.

Brad Whitford

Guitarist

Hollywood Vampires

Verified via Analogman

According to Analogman's website, Whitford used Lehle Dual A/B Switcher.

Ben Kenney

Guitarist, Bassist

Incubus

Verified via Photo

In a user-uploaded photo, Ben Kenney's pedalboard features the Lehle Dual A/B Switcher.

Josh Elmore

Guitarist

Cattle Decapitation

Verified via YouTube

In the video titled "Cattle Decapitation - Monolith of Inhumanity - studio report: strings," released by Metal Blade Records, the Lehle Dual A/B Switcher is visibly part of Josh Elmore's pedal board at the 7:04 mark, providing clear evidence of its use during the recording sessions.

Tom Keeley

Guitarist

Thursday

Verified via Premierguitar

Effects-wise, Keeley keeps things quite simple—he stomps on a Line 6 DL4 Delay Modeler, a Lehle Dual amp switcher, a Fulltone OCD, and (not pictured) a Boss TU-2 Tuner

Leo Abrahams

Guitarist, Keyboardist

Pulp

Verified via Photo

This photo of his pedals is from is from his official website, includes the Dual A/B Switcher

Ryan Miller

Singer, Guitarist

Guster

Verified via Photo

Used on the Look Alive Tour, as is observable in this January 21, 2019 Instagram post by Guster.

Eskild Myrvoll

Guitarist, Bassist

Kanaan

Verified via Photo

In an Instagram Story post, Eskild Myrvoll showcased his rig rundown, which includes a Lehle Dual A/B Switcher, as evidenced by the accompanying image.