While planning for the Bx series of pedals, my friend requested to build and older-style preamp to contrast the power of the more modern 3-band that I was also building. Found schematics to an older MM preamp and built to that. Glad he did, as the frequency range on this one is phenomenal! Not quite as powerful as the 3-band that I built, but it makes up for that in tone. This thing is great for pushing an overdrive pedal -- wow. Like FBIII, these'll be cracked in half, thrown into 1590 enclosures with a bunch of rad LEDs and a 3PDT switch. I just primed the enclosures and am waiting to buy some rattle-cans to finish them up when I get payed again. I don't have money to buy electronics for all of my instruments (2 guitars, 2 basses), so building what would normally be internal preamps and sticking them into enclosures is a damned-good compromise. Hopefully soon I can shutter the factory and get my studio back into full summer production; finish the ol'album that's going on seven years. http://www.talkbass.com/forum/f36/sp%E6kerb%9Cx-27-2hz-high-pass-filter-896616/ http://www.talkbass.com/forum/f36/f%E6pb%9Cx-iii-3-band-preamp-901439/#post12936643 ...how romantic. Not only do they share boards, but currently share a power supply! Edit: Currently! Hah! Electricity pun!