Guitar Pedal X - GPX Blog - 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?
NPD: Boss RT-20 Rotary Essemble : r/guitarpedals
BOSS RT-20 Rotary Ensemble Rotary Sound Processor (Vintage) Guitar Ped – Life Guitars Co.