http://theoremnyc.com/ > Sounds
Clean Break, Finster and WIMS were recorded through an SVT-IIPRO/SVT 410 HLN. This bass had EMG before Roger starting using his Soapbars.
Even Ways, Looking up and Teen Fiend were all recorded with the same bass, same cab but with an SVP-PRO pre through an SVP-1500 power-amp. Personally, I do not like the way the final mix of these songs were done.