Thanks for the response. That tells me a lot.
So if adjusting the tone trim pots fixed the volume issue then that tells me we are on the right track. When the sound is muffled like that, it usually means that the high side isn’t working, or is just way lower than the low side. So first of all put the pedal in “calibration mode” to ensure both the high and low signal paths are working. If the high side isn’t working then follow the troubleshooting guide about what to do in that case. If both sides are working then you’ll need to adjust the balance of the tone until you like it and then use the gain trim pot to make up for any volume lost. Start by turning down the lows and adjusting the highs up most of the way. Then move up the lows until you like the way it mixes with the highs.
PS: Remember, that in order to turn up the highs and lows you’ll need to turn the tone trim pots in the opposite direction that you turn the gain trim pot to increase the gain.
-Brach