Full disclosure; I've known one of the owners since HS, '82. Having said that, I read all the hype and so on, about this pedal, the history, and the Klon. Simply put, this pedal is a must have, as it handles a few chores very well; OD and Boost. Rock solid, quiet, smaller real estate, and most of all just fantastic sounding drive. Transparent? What's that. I'll this; now matter how high the gain, I can still hear my guitar and amp. Important? You decide. It's gritty and smooth, and pushes a slightly overdriven amp to nice breakup. My rig; Laney VC30 2X10, Fender Blues Jr. Squier J. Mascis JM, Fat Tele with BG Seymour stacked in the bridge and a Pearly Gates in the neck. Many pedals, I usually have my Archer on at all times, with gain at 9 o'clock, volume at 10 o'clock and tone at about o'clock.
Klon in a box type pedal. I use it just as a lead boost on my main board so the gain is pretty much all the way down. It does have more sounds that also sound great as I have messed around with it by itself.