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The Lester K from Electro-Harmonix emulates the classic sound of a rotary speaker in a compact stompbox enclosure. It features true stereo 1/4" input and output jacks, a tube-emulated overdrive section, and three different modes: Slow, Fast, and Break.
Fast mode gives you that twirling tremolo sound, while Slow mode provides a chorale effect. Quickly tap on the Speed/Break footswitch to alternate between the two. However, hold down the Speed/Break footswitch, and you'll halt either setting, thereby setting off Break mode—that welcome relief-from-tension trick often used by Hammond organ players when they're holding down sustained chords. In any mode, a balance knob allows you to blend the lows of the emulated rotor with the highs of the simulated horn, effectively offering you the choice between darker and brighter timbres.
Push Lester hard enough and you'll drive him right to the edge with this tube-emulated overdrive feature. Set the knob fully counterclockwise to bypass the effect altogether, or crank it all the way to really overdrive the emulated speaker.
In the Box
Electro-Harmonix Lester K Stereo Rotary Speaker Emulation Pedal