Curt from Classic Audio Effects spent four months and went through five different versions developing the expression roller, inspired by seeing James Duke fiddling with his pedals between every song, along with a personal desire to control his Timefactor on the fly. What we have to show for his hard work is a beautiful, well built expression pedal that outperforms every traditional model on the market. The "derby style" roller features a 10k pot and a Kevlar-reinforced drive belt - that’s the stuff they make bulletproof vests out of, so you won’t have worry about replacing a broken string like you would with a traditional expression pedal. It features a solid custom machined aluminum wheel that rotates 270 degrees, giving you a very nuanced and smooth sweep through whatever you may be modulating, along with an internal reverse polarity switch that allows it to work with all major brands of effects pedals. Plus, it looks great and takes up less room than your average pedal - meaning you can finally keep an expression pedal on your board.
The number one thing I have been asked is, "How long is the sweep?" It's long. Longer than my Moog expression pedal. And how well does it work? Great. Yes, it takes a little getting used to. I’ve played a wah pedal for years; I’ve owned an Ernie Ball Volume pedal; and I’ve had a Moog expression pedal for a decade. The traditional up and down foot sweep of those pedals feels more natural, but we aren’t talking rocket science. It’s just a matter of gliding your foot forward & backward vs. up & down. It takes a second to get fine movements down, but that’s about it. And the LED gets brighter or dimmer depending on where you are in the wheel's rotation, so you always know where you’re at. It couldn’t be simpler to use, and it works perfectly.