I put together the tube screamer last night. I couldn’t turn it on until today, because I was still waiting on the IC chip to arrive. The mail came, I popped it in, and I love it! I was expecting the pedal to be brighter, but from what I’ve read the RC4558 is supposed to be warmer.
Most of the parts were purchased from Mammoth Electronics. The PCB is from General Guitar Gadgets, and I used a few GGG’s ideas for mods. The left toggle is a fat switch. The right toggle is a on-off-on that lets you switch from (asymmetrical 914 diode clipping, no clipping – boost, red led’s – crunch). I also used the list supplied by GGG to switch out some parts like the Keeley Mod.
This was the first pedal project that I housed in a 125 size enclosure. It’s a third of an inch taller than the standard 1590b size. With that extra space I tried top mounting the jacks like Wampler!