Here are a couple more - the simple passive tone control that can be added to any circuit or used as a simple pa… | Treble booster, Diy guitar pedal, Diy guitar amp
RangeMaster Treble Booster Based DIY Guitar Pedal Effect PCB
Treble Booster Brian May
Stream Brian May Treble Booster Clone Breadboard by Don Baker Music | Listen online for free on SoundCloud