The beautiful ambience beds on Bizarre Guitar are primarily Peter Maunu doing "Sound on Sound" passes with the old Electro-Harmonics Looping delay box. Its 11k sample rate remove all semblance of any attacks, and the reverse function turns his linear phrases into pads. There really isn't anything else that sounds like that strange box. He then would multi-track these electro-harmonics pads to make complex stereo beds that Eric would sample and further process.
How could a guitar make that "Secret City" massive orchestra-type hit?
Try layering about sixteen samples of the shock noise of a guitar being plugged in to a wide-open amp on "11" and radically tune down each sample by six or more octaves. Snip the sample starts to give hard attacks. Tune each layer to make a powerful chord and you've got it.
