This is a great take on the muff and at a reasonable price, so as with others, support the builder when you can and if you don't fancy building a 6 knob effect yourself, then buy one.
Blackout Effector's info:
The logical progression from then to now, the MUSKET is based
on one of the raunchiest, best selling fuzz circuits of all time
- taken three giant muffy steps further. With the addition of the
PRE, FOCUS & MIDS controls, the MUSKET is able to traverse
the decades, the continents and the many iterations of the
classic 4-stage fuzz circuit - from emulation to beyond. If you
need fuzz and you need it to be massive...
And bass players, look no further. The Musket brings the
thunder to perfectly compliment your lightning. You'll
find the Musket on pro bass player boards
the world over.
fakcior on FSB made a few corrections to the schematic. He wrote:
I noticed couple of mistakes during comparison with pictures. Tried them in IvIark layout and worked pretty amazing (no volume drop in tone knob).
At revised schematic:
R27 470k -> 10k (weird mistake)
R17 10k - 56k (also weird mistake, it's clear that's 56k - green/blue/black/red)
C6, C9 47n -> 100n
C11 100n ->47n
So the following layout should clear up the issues some people have had with the tone control volume drop: