Hughes & Kettner and Nembrini Audio officially release the highly anticipated Tube Rotosphere Plugin, an authentic digital recreation of the iconic 1997 rotary speaker effects pedal. Guitarists and keyboardists can now access the coveted, tube-driven Leslie cabinet sound without the vintage price tag.
After years of remaining a highly sought-after, high-priced item on the secondhand market, the legendary Hughes & Kettner Tube Rotosphere pedal is back—in plugin form. The manufacturer, working in close collaboration with digital audio specialists Nembrini Audio, has launched the Tube Rotosphere Plugin, promising an exact, tube-saturated replica of the classic rotary speaker effect for modern Digital Audio Workstations (DAW).
Authentic Recreation of a Pedalboard Classic
Introduced in 1997, the hardware Tube Rotosphere quickly gained a reputation for delivering the genuine, three-dimensional sound of a rotating Leslie cabinet, thanks to its sophisticated high-voltage tube circuitry. Its warm, vibrant chorus and tremolo effects cemented its place on countless professional pedalboards.
Recognizing the pedal’s enduring success and high resale value, Hughes & Kettner took meticulous time to ensure this digital version would meet the high standards of the original.

All the Controls, Plus Modern DAW Integration
The developers have poured significant effort into ensuring the Tube Rotosphere Plugin is an exact replica. It captures the familiar rotary sound, complete with the signature tube coloration and harmonic tube distortion derived from the original pedal’s high-voltage design.
All of the pedal’s essential controls are present and fully functional, including:
- Separate Controls for LF and HF Rotor Speed: Fine-tune the low and high-frequency rotor speeds for ultimate tonal shaping.
- DAW Sync: Functions can be adjusted to sync perfectly with your DAW’s tempo.
- The Popular Breaker Function: Stop the rotor movement instantly and control the realistic start-up and braking behavior.

Stereo Sound and Platform Versatility
Further enhancing its utility in a modern studio environment, the plugin offers:
- Switchable Guitar and Keyboard Modes: Two optimized modes ensure the best sound regardless of your instrument.
- Full Stereo Capability: Create a wide, spacious, and immersive stereo field, perfectly emulating the spatial nature of a physical Leslie cabinet.
The plugin’s clear interface and excellent real-time visualization make operation intuitive, requiring no manual for those familiar with the original pedal.

System Requirements
It runs natively on both macOS 10.13 or higher (including native Apple Silicon support) and Windows 7 or higher. It is available in the most common 64-bit formats: VST, VST3, AAX, and AU.

Price & Download
The Hughes & Kettner Tube Rotosphere Plugin is available now as a download for the highly competitive price of just $29.99/£26/€29.
Hughes & Kettner Tube Rotosphere Instant Download at Thomann
More Information
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