This is Professional MkII Tone Bender clone crafted by Mojo Gear. It's build with NOS Mullard OC81D germanium transistors and NOS capacitors. This one features bias knob which gives plenty of new tonal options from Led Zeppelin to John Mayer starved tone on "CrossRoads" cover. It's true bypass of course and features indicator light and power input which is very rare to find in this fuzz. However you can not use it in daisy chain with most of the other pedals on the market, because this one has positive ground.(isolated power outputs, or battery it's the best)