"Loechel, an aerospace engineer who makes pedals as a hobby, based this build off of a late-'60s Sola Sound ToneBender Pro Mk II fuzz with a matched set of three NOS black glass Mullard OC75 germanium transistors. It was his first pedal where he etched, drilled, and soldered a PC board from scratch. The name and graphics were inspired by U2's ""How to Dismantle an Atomic Bomb"" album. Loechel says, ""The sound is warm & raunchy highly musical organic fuzz tone with a nice punch in the midrange, like that used by Jimmy Page on early Led Zeppelin recordings such as the song Communication Breakdown, and inspires a pretty good version of U2's ""Vertigo"" as well. This pedal really sings and those sweet germanium transistors produce that legendary Tonebender Mk II sustain that just goes on and on, feedbacks easily if desired, and yet cleans up nicely with a roll of the guitar volume knob."""