About this product

From the Beatles to Jeff Beck, Santana to Stevie Ray, many guitar greats have incorporated the rotary speaker into their rigs - something BOSS has kept in mind while designing the RT-20 Rotary Sound Processor.

Employing COSM-modeling technology, the RT-20 authentically reproduces classic rotary-speaker sounds. It offers adjustable Rise Time, Horn and Bass speed, Overdrive, and more. And not just for classic twirl, the RT-20 can be used to create unique overdrive and pulsating effects as well. This pedal sounds amazing, and offers a stunning graphical view of the virtual rotors on its built-in display.

Plug in your Guitars and keyboards to the RT-20, then use the Drive Type switch to optimize the effects. Surround your listeners in animated sound with the RT-20's dual outputs, which enable true stereo effects. Add color by adding an Expression pedal (such as the new BOSS FV-500H/FV-500L, optional), which lets you control parameters such as rotation speed seamlessly from slow to fast in real time. The RT-20's phone jack is handy for private practice and experimentation.

Thanks to its stunning visual display, the RT-20 might also be the most eye-catching pedal in BOSS history. The spinning lights don't just look cool, they also show the audio-rotation characteristics of the RT-20 in real time. The center of the display, illuminated in red light, represents the virtual horn. The outside ring, illuminated in blue, displays the rotation of the virtual bass speaker. It's attractive and informative!