BC549 NPN transistors
TAB1043 Programmable Quad Op Amp
You can really get away with any op-amp of your choosing, I don't think the TAB1043 really did much for the sound.
Anyone have some good straight DI clips with the Wal?
I've only found one, would love to hear some with the knobs open. Also clips of different tones you can get with fiddling.