This isn't your usual one-trick pony fuzz box.
What makes the Royal Fuzz so infectious is its mid-boost switch.
In the off position, you get classic 60s fuzz: Satisfaction-era Stones, the Count Five's Psychotic Reaction.
Engage the mid-boost and you're in Black Sabbath, stoner-rock territory for bottom-string riffs with a singing lead tone that's pretty damn close to Edwyn Collins' A Girl Like You.
So, yeah, we're blown away by the tonal versatility here. Our only niggle is the writing on the pedal is a little tough to read.