Put together a ParaMix for my brother to use in his bass and electric cello rigs. He wanted a way to blend his highly effected sounds(chorus, fuzz, various envelope filters) with the fundamental tone.
I used 680 nF caps to let all that low end through. This pedal works great, I was only able to play around and plug a few things into for a little while today but came up with some cool stuff. Might have to put together one for my board now.

