BOSS RT-20 Rotary Sound Processor

Multitudes of well-known guitarists have used rotary speakers live and in the studio, and with the BOSS RT-20 the sound is now accessible to everyone. Using BOSS COSM technology, the RT-20 models the classic sounds of rotary speaker rigs!

A faithful recreation of a classic sound.

• 4 different rotary speaker sounds to choose from.
• Easily adjust parameters like Rise Time, Horn and Bass Speed, Overdrive, etc.
• Control Slow/Fast transition time with a knob or an expression pedal.

Modern updates for extra fun.

While the RT-20 reproduces classic sounds, it also gives you modern flexibility. You can easily adjust parameters with onboard front-panel controls. Add onboard overdrive for extra texture. And, the virtual-rotor display looks awesome and gives you a representation of what's happening with the virtual treble horn and bass speaker.  

Rock the authentic, classic pulse and twirl sounds with the BOSS RT-20, grab one today! 

Full Features

• COSM technology recreates beautiful rotary speaker sounds.
• Control Slow/Fast transition time via knob or in real-time with an expression pedal.
• Onboard overdrive for added texture and saturation.
• Treble Rotor and Bass Rotor mix is adjustable.
• 4 different sound types including UNI-V.
• Switch to choose between Guitar and Keyboard input.
• Dreamy front panel virtual-rotor display screen.

Full Specs

• Nominal Input Level: -20 dBu
• Input Impedance: 1 M ohms
• Output Impedance: 1 k ohms
• Recommended Load Impedance: 10 k ohms
• Display: VIRTUAL ROTOR
• Controls: EFFECT ON/OFF pedal, SLOW/FAST pedal, MODE knob, RISE TIME knob, EFFECT LEVEL knob, DIRECT LEVEL knob, BALANCE knob, OVERDRIVE knob, SLOW SPEED knob, FAST SPEED knob, DRIVE TYPE switch
• Indicators: POWER(serves also as battery check indicator), EFFECT ON/OFF, SLOW/FAST
• Connectors: INPUT A (MONO) jack (1/4 inch phone type), INPUT B jack (1/4 inch phone type), SPEED (EXP PEDAL) jack (1/4 inch phone type), PHONES jack (stereo 1/4 inch phone type), OUTPUT A (MONO) jack (1/4 inch phone, type), OUTPUT B jack (1/4 inch phone type), AC Adaptor jack
• Power: DC 9 V=Dry battery (R6/LR6 (AA) type) x 6, AC Adaptor (PSA-series)
• Accessories: Owner’s Manual, Dry battery x 6
• Options: AC Adaptor (PSA-series), Expression Pedal (EV-5)