Got this rare bird in today. It's a fuzz unlike any I've laid my mitts on. 6 knobs: Low Freq, Mid Freq, High Freq, Volume, Mix, and Fuzz. They sound self-explanatory, but the interaction between the three freq knobs is a little strange. Definitely not an easy horse to tame. Pros:
-This pedal can get the subdued, fuzz tone that I prefer. Similar to the Lotone, but the Ultraviolet doesn't misplace your highs and high mids.
-Many, many tones once you figure the controls out.
-Blend control. Cons:
-The controls were baffling, due to their passiveness. I was expecting clockwise turns of the freq knobs to boost that set (i.e. active controls), but it acts like the old Fender tone stack. Counter clockwise isn't boost per say, but the least amount of cut. Like on the Fender tone stack, bass and treble rolled off with the mids at two-ish is fairly flat. I think.
-Not dead-silent, although it isn't what I'd consider noisey, like say a Big Muff or Fuzzface.
-Like a Fuzzface, it's turns my amp into a 900 watt radio with the fuzz cranked. Fortunately, the fuzz has more gain than you'll ever need. I don't think I'd use anything past 10:30-11:00 o'clock for anything other than noise and feedback,
-No power supply. Battery only
-Taller than average. At least two inches.
My track record with fuzzes is abysmal. I've owned the NYC BigMuff, Dunlop Fuzzface, Frantone Lotone, PE Depth Charge, Pharoah Uptown Fuzz, and the Blackcat BOF. The Depth Charge is the only one whose sound I liked in a distorted mix. Everything else disappeared under the same conditions. Also, it's controls were the most user-friendly and it's build quality was excellent. I don't know if the Blackbox will hang around like my Blueberry or Tubefactor, but I dig it today.