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Electro Harmonix Lester K Rotary Speaker Effects Pedal


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  • Compact rotary speaker emulator influenced by the Leslie cabinet
  • Designed with keyboard players in mind
  • Can be used with either a keyboard or guitar
  • Volume, Balance and Drive controls feature for tone control
  • Adjustable speed dials control level of rotary effect
  • Tube-emulated overdrive control
  • High quality buffered bypass and variable speed footswitch
  • EHX9.6DC-200 PSU included
  • More affordable brother to the Lester G pedal
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  • Flexible finance available on orders over £250
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Delivery & Returns

Delivery to UK mainland addresses* is FREE on orders over £75 and up to 30kg. (As a guide, a standard electric guitar weighs approx. 3-5kg).

Delivery on orders below £75 are charged at £4.45!

Delivery to Northern Ireland, the Scottish Highlands & Islands, Isle of Man, Isle of Wight, Channel Islands and the Republic of Ireland. is weight dependant and will be indicated at the checkout

Delivery above 30kg to ANY location will vary according to weight and will be indicated at the checkout

LocationPriceStandard Delivery
UK mainland*FREE on orders over £75 £4.45 on orders under £751-3 working days
Northern Ireland, Scottish Highlands & Islands Isle of Man Isle of Wight Channel Islands Republic of Ireland£12.95 – any order value up to 30kg Over 30kg - please call1-3 working days
OverseasPlease call for detailsPlease call

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The Lester K by Electro Harmonix is primarily designed with keyboard players in mind, providing you with fantastic organ-style sounds or real, rotary chorus sounds for the guitar. The more affordable sibling to the Lester G, this rotary speaker emulator has much to offer, all encased in a sturdy, compact chassis which would even fit in your pocket.


An important and impressive feature of the Lester K is its ability to vary speeds via the footswitch, allowing you to do so with ease. Whether you are playing guitar or keyboard, you can dial in your desired settings in Slow and Fast modes and switch seamlessly between the two using the footswitch. You can also be assured that the metal casing of the pedal can withstand many stomps as you alter between its rotary sound outputs.

There are also dials for Volume, Balance and Drive on the face of the Lester K. The Drive dial replicates a tube-overdrive which gives you a gutsy sound on top of the original guitar or keyboard tone. The Balance control essentially allows you to alter the overall tone.


You can use the traditional, high quality buffered bypass to bring your effects pedal to a stop. However an interesting feature is that you can pause the actual speaker effect without losing your desired Drive and tone (Balance) settings, an incredibly handy feature to have. The buffered bypass switch also works tirelessly to ensure that no signal is lost while the Lester K is in use.

The Lester K includes a 9.6V DC 200 mA power supply for you to plug in and enjoy right away. This is an awesome, compact effects pedal that remarkably emulates the sounds of a Leslie so you don’t have to carry a huge cabinet around with you for realistic rotary speaker sounds, plus, it’s made to be affordable.

ManufacturerElectro Harmonix
Model NameLester K Rotary Speaker
Controls Volume
Speed Brake
Buffered bypass
Dimensions (mm)102 (W) x 121 (L) x 89 (H)
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