Electro-Harmonix Lester-K Stereo Rotary Speaker main image

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Electro-Harmonix Lester-K Stereo Rotary Speaker

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$109.99 to $217.70 Price Tier: Standard

4.5 (5)

1 Critic Review

Find out who is using Electro-Harmonix Lester-K

1 community setup

10 wishlisted

23 saved

Page last updated Jul 05, 2026

Pricing and availability

We compare 600+ stores and found this item at 7 stores. Prices updated July 3, 2026.

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Reviews

Price

4.5 (30)

$130.62

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4.5 (9)

$217.70

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4.0 (51)

$119.00

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4.0 (32)

$109.99 44 available New

$99.00 17 available Used

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5.0 (7)

$217.70

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$217.70

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4.6 (35)

$180.00

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Average Price: $161

Standard/Professional

$100

$251+

Price Tier

In the Univibe & Rotary Effects Pedals category, Electro-Harmonix Lester-K Stereo Rotary Speaker is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Standard

High-end

Price History

Based on price data from 4 merchants for "Electro-Harmonix Lester-K Stereo Rotary Speaker". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Engage in an immersive musical experience with the Electro-Harmonix Lester-K Stereo Rotary Speaker. This pedal is a compact, easy-to-use package that delivers the iconic rotary speaker emulation, redefining the tone and texture of your music.

The Lester-K Stereo Rotary Speaker showcases the finest in musical technology, boasting a tube-style overdrive that is variable and can be fine-tuned for precision. Musicians can switch between the adjustable Fast and Slow modes to tailor their sound, simulating the effect of a large cabinet speaker ramping up and down in speed. This versatile pedal caters to both stereo and mono inputs, providing a lush, realistic sound on both fronts.

Ideal for guitarists and keyboardists, the Lester-K pedal enables you to create smooth, swirling stereo chorus effects reminiscent of the classic Leslie sound. Its drive control adds B-3 guts and grit to your sound, while a balance control simulates the balance between a Leslie's horn and bass speaker for a well-rounded tone.

The Lester-K is a robust pedal with a stage-ready metal chassis, ensuring durability and resilience. It features true stereo in/out, making it a perfect addition to live performances, and a great option for adding stereo textures to recordings.

Key Features:

Rotary speaker emulation for an iconic sound
Variable tube-style overdrive for precision
Balance control to simulate Leslie's horn and bass speaker
Adjustable Fast and Slow modes for versatility
Stereo/mono in/out for a realistic, lush sound
Stage-ready metal chassis for durability
Buffered bypass for long cable runs.

Owner's manual

Electro-Harmonix Lester-K Stereo Rotary Speaker User Manual

Product specs

Pedal Type	Rotary Speaker
Inputs	2 x 1/4" (left, right)
Outputs	2 x 1/4" (left, right)
Bypass Switching	Buffered
Power Source	9V DC power supply (included)
Height	2.25"
Width	4.0"
Depth	4.75"

FAQs

What type of power supply does the Electro-Harmonix Lester-K Stereo Rotary Speaker Pedal require?: The Electro-Harmonix Lester-K Stereo Rotary Speaker Pedal requires a 9V DC power supply, which is included with the pedal.
Can the Electro-Harmonix Lester-K be used in a stereo setup?: Yes, the Electro-Harmonix Lester-K has stereo inputs and outputs, allowing it to be used in a stereo setup for a more immersive rotary speaker effect.
How does the Electro-Harmonix Lester-K differ from other rotary speaker pedals?: The Electro-Harmonix Lester-K offers a stereo rotary speaker effect with buffered bypass, providing a rich, authentic rotary sound in a compact form, suitable for both live and studio use.
Is the Electro-Harmonix Lester-K suitable for use with keyboards as well as guitars?: Yes, the Electro-Harmonix Lester-K can be used with both guitars and keyboards, making it versatile for musicians who want to add a rotary speaker effect to different instruments.
Does the Electro-Harmonix Lester-K Stereo Rotary Speaker Pedal include a bypass feature?: Yes, the Electro-Harmonix Lester-K features buffered bypass switching, ensuring your signal remains strong and clear when the effect is not engaged.

Videos

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EHX

Electro-Harmonix Lester K and Lester G Stereo Rotary Speaker Pedals (Demo by Mike Matthews)

EHX

Electro-Harmonix Lester K Stereo Rotary Speaker Pedal (Demo by Dave Sherman)

EHX

Electro-Harmonix Lester K Stereo Rotary Speaker Pedal

EHX

Electro-Harmonix Lester K Stereo Rotary Speaker Pedal (Organ Demo by John-paul Gard)

EHX

Electro Harmonix Lester K & Lester G Rotary / Leslie Speaker Emulator Pedal Demo

StompboxTV

Mini vent II vs EHX Lester K vs Nord Electro 5D.

Tom Ansink Videos

Electro Harmonix Lester K Leslie Rotary Speaker Pedal Demo

Matt The Guitar Guy

The Lester K by Electro-Harmonix - That Leslie Sound Series

PJ and the Beard

MusicMaker Presents - EHX LESTER K: A Sophisticated Leslie Style Speaker Cabinet In A Pedal @EHX

Musicmaker

Lester K Rotary Speaker Test by Electro Harmonix and Keyboard Roland XPS 30

Boni Suwardana

Strings Quick Demo : Electro-Harmonix Lester-K

Strings Shop

Reviews

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PROS

Realistic rotary speaker sound, closely mimics Leslie cabinets
Compact size, fits easily with other pedals or on a keyboard
Enhances organ sounds significantly, especially for Hammond and B3 tones
Versatile, works well with both keyboards and guitars
Adjustable overdrive offers a range from subtle to intense
Footswitchable slow/fast speed settings for dynamic playing
Simple controls, easy to find the desired sound
Provides a vintage vibe and warmth to performances
Can be used to boost the power and presence of less expressive instruments
Offers a cost-effective solution for achieving authentic rotary speaker effects

CONS

Overdrive sound described as "transistor-y" and thin by some users
Speed switch can be awkward to use, especially for keyboard players
May require additional volume adjustment, perceived as reducing treble

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix Lester-K Stereo Rotary Speaker.

Features and functionality

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The left footswitch toggles between slow and fast rotary modes and simulates the Leslie slowing to a stop if held.
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It's noted that the Lester-K may not maintain a stereo field when the effect is active, as stereo inputs are summed to mono.
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0 0

The Line 6 Roto Machine, while older, offers three distinct rotary modes, though the built-in drive is generally deemed subpar.
Source

Use cases and applications

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Users find a compression pedal enhances the Lester-K's performance, particularly with guitar setups.
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0 0

Running the pedal after reverb is preferred by some, though others experiment with placement before reverb for different effects.
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Comparisons

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The Lester-K is compared to the Boss RT-20, noted for its compact size but lacking in authentic Leslie sound emulation.
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0 0

The GSi Burn offers superior sound and MIDI control but suffers from poor build quality compared to the Lester-K.
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0 0

The Strymon Lex was preferred over the Lester-K for its less "effect-like" sound and selectable stereo/mono input options.
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0 0

The TC Electronic Vibraclone Rotary was noted for poor quality control, with a new unit failing right out of the box.
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0 0

The Vent Mini 2 was praised for its sound, competing closely with the Fender Pinwheel, but lacks expression control and is significantly more expensive.
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0 0

The Digitech Ventura Vibe was highlighted for its dynamic Rotary mode and effective drive/tone knob, making it a strong stereo option.
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User experience

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A stereo setup is recommended for achieving a lush rotary effect, although users are satisfied with mono configurations.
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Some owners feel the Lester-K sounds too much like an "effect" rather than authentically replicating a Leslie, influencing their choice for alternative pedals.
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0 0

The EHX Lester was criticized for sounding more like a cheap phaser than a true rotary effect, disappointing even dedicated EHX fans.
Source

Critic Reviews

Electro-Harmonix Lester K & Lester G

soundonsound.com

The Electro-Harmonix Lester-K Stereo Rotary Speaker offers a convincing rotary speaker emulation at an attractive price. While not a 100% replication of a Leslie speaker, it delivers a pleasingly musical and believable sound, especially when paired with organ emulation pedals. The stereo effect shines, and the slow speed setting provides a captivating, trippy experience. The drive control adds a gritty overdrive, though some may prefer their own pedals. The Lester-G variant includes a mono input and an additional compressor, enhancing sustain for guitarists. Ideal for those seeking a cost-effective yet quality rotary effect, the Lester series may not match high-end competitors like Neo Vent or Strymon Lex but stands strong in its price range.

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4.5 out of 5

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Artist usage

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Tommy Davidson

Guitarist

Beach Fossils

Verified via Imgur

During a performance at the El Rey Theater with Beach Fossils, Tommy Davidson's setup included the Electro-Harmonix Lester-K Stereo Rotary Speaker, as seen in a screenshot from Fender's Instagram.