BOSS - RT-20 Rotary Speaker + BOSS Super Chorus CH-1 - YouTube
Boss RT-20 Rotary Ensemble Pedal | Sweetwater
Guitar Pedal X - News - As the Last of the Boss 20-Series Pedals start to bow out - how many of those will we see transition to 200-Series Equivalents?
Boss RT-20 Rotary Ensemble Pedal COSM Speaker Overdrive Effects for Electric Guitar (RT20 RT 20) - LBS Music World Malaysia
The RT-20 Rotary Ensemble by Boss - That Leslie Sound Series - YouTube