Analog Allstars EQP-1S5

I threw together a pair of these Analog Allstars 500 series solid state Pultec EQP-1A clones yesterday. The build instructions were clear and they were a breeze to put together. I haven’t had a chance to give them a listen yet but I’ll report back when I do. I ended up using some Purple KDJ-4 opamps I had lying around as opposed to the original API 2520’s (yep, the solid state pultecs used API opamps) so if i don’t love them I can always try to swap them out.

The only thing I had to go back and fix was the transformer wiring. It’s clearly labeled, but I swapped the inputs and outputs. Just something to watch out for.