Rotary speaker emulation with two speeds, brake and acceleration control, vintage, classic or modern cabinet voicing, variable mic position, and a drive stage.

Karousel recreates the unmistakable motion of a rotary speaker—where air and electricity swirl together into living sound. From slow, vibey pulse to fast Leslie shimmer, it spins your tone through space with stunning realism. Adjustable drive adds warmth and bite, while mic position simulation creates natural stereo depth and doppler effect. A press of the footswitch changes speed; hold it to brake the rotation.

I/O: mono or stereo in and out on TS or TRS, MIDI In/Thru
Features: tap tempo or MIDI clock, APEX mode (assign any parameter to expression), 128 presets via the Keystone Control Center app, firmware updates over USB

https://www.keystonemusical.com/products/karousel-rotary-drive