Sequential Circuits History from 1982 PRO-FX Mainframe & Modules
Sequential Circuits PRO-FX brochure Vintage 1982.
Pro-FX System sn#130 with 4 modules: Distortion, Phase Shifter, Mixer, & DDL. #R-231 right angle pot, 10k #R-238 pot, 10k #R-240 dual tandem pot, 10k Black knob with chrome collar Outer Knob dual tandem pot
Original Pro-FX DDL Package Operations Manual * still stored in plastic bag
* Pro-FX Tech & Operations Manuals * Six (6) for $15
PRO-FX Modules Technical and Operation Manuals * Model 510 Phase Shifter Op Manual * Model 512 Distortion Module Service Data * Model 514 Mixer Module CM514 Op Manual * Model 516 Parametric Equalizer CM516 Op Manual * Model 520 Transpose/Sync CM520 Op Manual * Model 510 Expansion Cage CM501 Op Manual * Each stored in protective plastic bags
Original Parts for Pro-FX Modules
Modules are NOT Available.
5 Original Pro-FX Spare Parts avalable for $49
#R-231 right angle pot, 10k
#R-238 pot, 10k
#R-240 dual tandem pot, 10k
Black knob with chrome collar
Outer Knob dual tandem pot
Modules are NOT Available.
Original Pro-FX Promotional Materials
Various Original Sequential Circuits PRO-FX Promotional items Vintage 1982.
Original Sequential Circuits PRO-FX Modules brochure Vintage 1982.
Model 510 Phase Shifter Module
Model 512 Distortion Module
Sequential Circuits Model 524 Digital Delay
Model 514 Mixer Module
Last Update: August 17, 2026
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