Germanium. Enough said.
I was in the market for a fuzz pedal after trying to craft my own sound. I watched It Might Get Loud and marveled when Jack White used his Electro Harmonix Big Muff Pi and thought that was the sound I was looking for. Well, after reading reviews, listening to lots of fuzz samples, going back and listening to the music I've heard a thousand times, and heeding some good advice from a long-time guitar-playing co-worker about Germanium parts, I decided to give the '69 mkII a try.
You can add a little grit or go to full-on fuzz glory with this unit. Comparing this unit to the Big Muff, it's just a lot smoother, not so out of control but with lots and lots of fuzz. I believe this smoothness is where the Germanium transistors come into play, but I may be wrong. Tone is such a subjective thing after all.
Twist all the knobs to ten and use your guitar's volume control to get where you need to be. I like to use the '69 by itself, with my Boss Octave pedal and then in conjunction with my Radial TriMode and MXR 10 Band EQ.
I can't comment on the '69 mk II through a solid state amp but through a tube amp? Aural ecstasy.
Once you have a good quality fuzz pedal on your board, you'll wonder why you didn't do it a long time ago. The '69 mk II is a great pedal and well worth the price. Pay a little more for Germanium parts. You won't regret it.