do you have your guitar’s volume rolled down?

hey, you’d be surprised how many of the errors on here are definitely users overlooking things or being generally inexperienced. You can’t tell from the internet.
per here, looks like the first is supposed to act as a volume, second as a fuzz.

that said, I thought the slightly older large box models were kind of an overdrive type grainy sound on single and a raucous fuzz on double. hope this helps.

from what i know, the original “Muff” circuit is simply a mild over driven boost, that sounds great as a fuzz when stacking more than one in a row. hence they made the “Double Muff” that is simply 2 of the same circuits in the same box.

so in reality the 2 knobs do the same thing, but it sounds fuzzier when you start turning up the second one, because you are then stacking the two circuits into each other.

seems odd to me, I’ve not tried the nano but I have the original and it’s one of my favourite overdrives in ‘single’ mode. There’s 2 points here.. it’s correct that in single mode the knob acts as a volume control, but it should work as a volume control for the overdrive (the amount of drive is ‘fixed’).. but it’s not a clean volume boost at all.

I am driving mine with medium output humbuckers though, but even taking that into account, there’s no way it should be clean with single coils… the ‘muff fuzz’ (of which this is two of cascaded) is a pretty gritty little beast. you should at least get a gritty vintage drive sound in single mode.

http://www.youtube.com/watch?v=wAVhAgTIP6g

skip to about 1:30 to hear it in single mode.