Description
Overview
The Electro-Harmonix Lester K Stereo Rotary Speaker delivers a lush, realistic emulation of the iconic rotating speaker cabinets used in classic rock, soul, and gospel. By utilizing stereo outputs, this pedal creates a wide, immersive soundstage that captures the swirling movement of a physical Leslie speaker without the need for a massive, heavy cabinet on stage.
Designed for versatility, the Lester K allows users to fine-tune the speaker balance and introduce a variable tube-style overdrive, adding warmth and grit to the signal. Whether you are seeking the shimmering textures of a B3 organ or the psychedelic swirls of a 60s guitar tone, the Lester K provides a professional-grade rotary experience in a compact pedal format.
Key Details
- Rotary Emulation: High-fidelity recreation of rotating speaker cabinets for a rich, swirling stereo image.
- Flexible I/O: Supports both stereo and mono inputs and outputs to fit any signal chain.
- Tube-Style Overdrive: Integrated variable overdrive to emulate the natural saturation of vintage tube amplifiers.
- Dynamic Speed Control: Adjustable Fast and Slow modes that accurately mimic the ramp-up and ramp-down acceleration of a physical rotary speaker.
- Precision Balancing: Dedicated controls to fine-tune the speaker balance for optimal stereo placement.
- Signal Integrity: Equipped with a high-quality buffered bypass to maintain tone across long cable runs.
Use Cases
- Classic Organ Tones: Perfect for keyboardists and organists looking to achieve the authentic “Leslie” sound for gospel, jazz, or rock.
- Psychedelic Guitar Textures: Ideal for guitarists wanting to add movement and depth to clean or overdriven leads.
- Studio Layering: Use the stereo outputs to create a wide, atmospheric soundscape in a mix without needing a physical rotating speaker.
- Live Performance: A portable alternative to heavy cabinets, providing the same sonic movement with a small pedalboard footprint.
Installation
The Lester K is a plug-and-play hardware pedal. Connect your instrument to the input and route the outputs to your amplifier or mixing console. For the full immersive effect, it is highly recommended to use the stereo outputs connected to two separate amplifiers or a stereo channel on a mixer.
The pedal is powered via the included power adapter to ensure consistent voltage and headroom for the tube-emulated overdrive circuit.
Compatibility
- Instruments: Compatible with electric guitars, keyboards, synthesizers, and any line-level instrument.
- Amplification: Works with mono or stereo amplifier setups.
- Power: Requires the included power adapter.
Additional Details
- Manufacturer: Electro-Harmonix
- Model: Lester K Stereo Rotary Speaker
- Dimensions: 7.25″ x 6.25″ x 0.2″
- Weight: 1.56 lbs
- Delivery Format: Physical Hardware






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