When asked in this reddit thread what kind of equipment Optical uses, he responds:
"I have owned (and still do mostly) as best as I can remember: Mackie 32/8 32 channel - (I have had 3 altogether), 3 x Emu E6400 Ultra (also E6400 orig), Akai S750, S900, S1100, S3000 samplers, Alesis Quadraverb, Focusrite Green Eq x2, Focusrite Green Compressor, Focusrite ISA430 Producer Pack, Lexicon Alex, Lexicon MPX1, Alesis MidiVerb4, TC Electronics Fireworx, TC Electronics Finalizer, Joe Meek VC1, Drawmer MX40, Sherman Filterbank, CryBaby Wah Pedal Boss Pedals - Too many, Novation Basstation, OSCar, Sequential Circuits Pro1, Prophet 5, Wurlitzer, PPG Wave 2.1, Neumann TLM 105*, Fender Strat 1972, Oberheim/Viscount GM1000, Korg Z1, Kawai K1r, Otari Status 16R Mixing Console with Eagle Automation. BSS DPR-402 Compressor. and more I can't recall right ow ;o)."
*The Neumann links to the 103 because the moderator who approved this post believes Optical wrote 105 by mistake. If anyone believes this to be an error please follow up in the comments section so that we can adjust :)