Dave Barber has been doing Plexi mods for decades from his home on York
Pennsylvania. He was in it at the beginning. Guys as diverse as Billy Gibbons to Joe Satriani came to him for mods for amps and indeed pedals. He soon simple made a whole new pedal for these guys. Soon word of mouth gave him so many orders that he decided to simply make his own line of pedals.
He has never been interested in going 'full factory'.
Keeley got on the map with his first Compressor. Few know you could have simply bought the same damn pedal from Dave years before.
🙋When Dave came up with the Burn Unit it was for guys wanting an old Fender Bassman kind of sound. Once he got thru several versions and found a formula that pleased his critics he ended up with what everyone now calls a Dumble-in-a-Box. A Dumble is a hot rodded Bassman. The layout is volume, Tone and Gain. A toggle gives you 3 different mids voicings and second toggle gives you different dynamics so the 'feel' fits your kit and your touch.