Most of the record was a 1962 Fender Jazz Bass into a 1970 SVT Blue Line and matching 8x10 Cabinet.  Higher Level and RnR Messiah was a mid 90's Music Man Stingray 5 string.  We split the signal and took a direct signal which we blended with the mic'ed cab.  We used two JBL compressors to get different tones through out the album.  We also overdrove the board preamps in certain places to get some wooly tones.