SequentialCircuits.com

Home of the PROPHET® and all SEQUENTIAL CIRCUITS instruments.

****Sequential Circuits Pro One **** SURVIVAL * SURVIVAL * SURVIVAL ** Parts ** Parts ** Parts ** Parts
Critical Parts * Drop-in Replacements Original ICs * NOT Clones
  • Original #I-319/CEM3310 Envelope Genrator IC $95
  • Original #I-320/CEM3320 VCF IC SOLD OUT
  • Original #I-321/CEM3340 VCO IC $115
  • Original #I-322/CA3280 dual VCA IC $95
ICs available individually while supplies last
Original #I-319/CEM3310 Envelope Generator SHIPPING INSIDE USA.
$95.00
Original #I-319/CEM3310 Envelope Generator SHIPPING OUTSIDE USA.
$95.00
Original #I-321/CEM3340 VCO IC SHIPPING INSIDE USA.
$115.00
Original #I-321/CEM3340 VCO IC SHIPPING OUTSIDE USA.
$115.00
Click or Tap on picture to enlarge
Original #I-322/CA3280 dual VCA IC SHIPPING INSIDE USA.
$95.00
Original #I-322/CA3280 dual VCA IC SHIPPING OUTSIDE USA.
$95.00
#S-048 PC Mount Power Switch $10
NOS #S-048 PC mount power switch found in early Pro Ones with PC mounted transformers.
Original NOS #S-048 Pro One PC mount power switch SHIPPING INSIDE USA.
$10.00
Original NOS #S-048 Pro One PC mount power switch SHIPPING OUTSIDE USA.
$10.00
Click or Tap on pictures to enlarge.

Nylon shaft for PRO ONE pot SHIPPING INSIDE USA. Click On picture to enlarge.

$15.00

Nylon shaft for PRO ONE pot SHIPPING OUTSIDE USA. Click On picture to enlarge.

$15.00
Switches & knob for Pro One & Prophet 600.


Used restored original #S-046 two position slide switch $9

New Old Stock (N.O.S.) original #M-357 black control panel knob $8

Used original #M-357 black control panel knob $4
 
7 New Original NOS #M-357 knobs $25
7 New Original (N.O.S.) #M-357 black knobs for the Pro One SHIPPING INSIDE USA.
$25.00
7 New Original (N.O.S.) #M-357 black knobs for the Pro One SHIPPING OUTSIDE USA.
$25.00
4 screws for Pro One wood sides $10
4 Black Screws for Pro One wood sides PLUS 4 nuts for back panel jacks and FREE SHIPPING INSIDE USA
$10.00
4 Black Screws for Pro One wood sides & 4 nuts for back panel jacks plus $15 for SHIPPING OUTSIDE USA
$10.00
* Original Pro One 1981 brochure * ****SOLD OUT****
Original Pro One brochure from 1981 - pages 1 & 4
Original Pro One brochure from 1981 - pages 2 & 3

Original Pro One brochure from 1981 SOLD OUT.

$0.00

Original Pro One brochure from 1981 SOLD OUT.

$0.00



Last Update: March 23, 2025