The Hughes & Kettner Tube Rotosphere has long been celebrated as one of the most authentic Leslie-style pedals ever made — its lush swirl, warm tube drive, and unmistakable three-dimensional movement have been a staple for guitarists, organists, and studio players alike. Now, thanks to Nembrini Audio, the Rotosphere is officially in the box as a plugin for your DAW.
This plugin faithfully models the Rotosphere 2, delivering everything players loved about the original hardware: rich tube saturation, dual-band rotary motion, and mix-ready stereo depth. Independent LF (bass rotor) and HF (horn rotor) controls let you dial in syrupy slow churns or fast, vocal-like spins. Better yet, you can sync speeds to your session tempo for instant, rhythmic motion.
Hit the Breaker to stop the rotors cold while keeping the glowing tube coloration alive — a trick perfect for ambient swells, tension-building organ stabs, or dreamy guitar textures. Choose between Guitar and Keyboard voicings to instantly adapt the rotary engine to your instrument, whether you’re running a Rhodes, Hammond, synth, or six-string.
The plugin nails what makes rotary cabinets so addictive: opposing rotors moving at different speeds, creating Doppler shifts, phase modulation, and the swirling push-pull of frequency damping. Add the modeled tube drive stage, and you get the same smooth, dynamic compression and musical distortion that made Hammond rigs legendary.
The plugin includes:
- Independent LF/HF rotor speeds with tempo sync
- Tube drive stage for rich harmonic saturation
- Breaker mode for dramatic rotor stops
- Dedicated Guitar and Keyboard voicings
- True stereo processing with immersive width
- Real-time interface with motion feedback
- Broad format support (VST2, VST3, AAX, AU; Mac/PC; Apple Silicon compatible)
The Hughes & Kettner Rotosphere Plugin is more than a digital clone — it’s the soul of the original pedal, adapted for today’s hybrid workflows. Whether you’re laying down organ beds, fat Rhodes grooves, synth textures, or guitar leads, the Rotosphere delivers tube-soaked motion that’s as inspiring in a DAW as it was on a pedalboard.
Get it here and keep up with all our Hughes & Kettner coverage here.
