SequentialCircuits.com

Home of the PROPHET® and all SEQUENTIAL CIRCUITS instruments.

*** Sequential Circuits Prophet 600 *** ** SURVIVAL ** SURVIVAL **
Prophet 600 CPU & Voice Boards $35 *** FOR PARTS *** FOR PARTS *** Untested * Partially Populated
Untested Prophet 600 CPU & Voice Boards * Connected * PC600-3 & PC600-4
Untested Prophet 600 CPU & Voice Boards * Connected * SHIPPING INSIDE USA
$35.00
Untested Prophet 600 CPU & Voice Boards * Connected * SHIPPING INSIDE CALIFORNIA
$35.00
NOS #R-234 Original Control Panel Pot for the Prophet 600 ** $20
NOS Original #R-234 Control Panel Pot (10K) ** There are 25 #R-234 pots in the Prophet 600.
NOS Original #R-234 Control Panel Pot (10K) for the Prophet 600 SHIPPING INSIDE USA.
$20.00
NOS Original #R-234 Control Panel Pot (10K) for the Prophet 600 SHIPPING OUTSIDE USA.
$20.00
Used 61-note Prophet 600 keyboard $95
Used 61-note keyboard for Prophet 600 * Top Side
Used 61-note keyboard for Prophet 600 * Bottom Side
Used 61-note Original Prophet 600 keyboard SHIPPING INSIDE USA
$95.00
Used 61-note Original Prophet 600 keyboard SHIPPING INSIDE CALIFORNIA
$95.00
Control Panel Pot, Knob & Switches $33
One (1) NOS original #R-234 control panel pot * One (1) NOS original #M-357 black control panel knob * Two (2) used restored original #S-046 two position slide switches * SHIPPING INSIDE USA
$33.00
Prophet 600 Parts & Manuals
5-Octave Keyboard PC Board Set $20
Prophet 600 keyboard parts ** PC board set for 5-octave keyboard
PC Boards for Prophet 600 5-octave keyboard SHIPPING INSIDE USA
$20.00
PC Boards for Prophet 600 5-octave keyboard SHIPPING OUTSIDE USA
$20.00
Conductive Rubber Key Contact Strips
Two (2) Contact Strips ** 6-contacts per strip * Prophet 600 keyboard parts
Two (2) Keyboard Contact Strips each with 6 contacts per strip * SHIPPING INSIDE USA
$20.00
Two (2) Keyboard Contact Strips each with 6 contacts per strip * SHIPPING OUTSIDE USA
$20.00
7-Contacts per Strip * Contact Strip found at high end of Prophet 600 keyboard
One (1) Keyboard Contact Strip with 7 contacts * SHIPPING INSIDE USA
$25.00
One (1) Keyboard Contact Strip with 7 contacts * SHIPPING OUTSIDE USA
$25.00
Used Prophet 600 Transformer $22
Used Original Prophet 600 Transformer * SCI Part Number #E-114
Used Original #E-114 Prophet 600 Transformer * SHIPPING INSIDE USA
$22.00
Used Original #E-114 Prophet 600 Transformer * SHIPPING OUTSIDE USA
$22.00
Every Prophet 600 has Four (4) VCAs *** #I-327/CEM3360 dual VCA IC *** $25 each
Every Prophet 600 requires 4 working #I-327/CEM3360 dual VCA ICs.
#I-327/CEM3360 Dual VCA IC tested & qualified in a Sequential Circuits Prophet 600 SHIPPING INSIDE USA.
$25.00
#I-327/CEM3360 Dual VCA IC tested & qualified in a Sequential Circuits Prophet 600 * SHIPPING OUTSIDE USA.
$25.00
Prophet 600 Critical CEM ICs
CEM ICs available individually while supplies last
Contact Wine Country for CEM IC availability
  • Original #I-321/CEM3340 VCO IC SOLD OUT
  • Original #I-327/CEM3360 dual VCA IC $25
  • Original #I-331/CEM3372 signal Processor IC $185
The Prophet 600 requires twelve (12) #I-321 VCO ICs, 
six (6) #I-331/CEM3372 Signal Processor ICs
and four (4) #I-331/CEM3360 dual VCA ICs to operate.
A failure in any one of these ICs will result in a bad voice.
7 Original Knobs *** 10 Original Keys High C Key
7 New Original (N.O.S.) #M-357 black knobs for the Prophet 600 SHIPPING INSIDE USA.
$25.00
Used Original High C key for the Prophet 600 SHIPPING INSIDE USA.
$20.00
Set of 10-key for Prophet 600 keyboard SHIPPING INSIDE USA.
$30.00
Click or Tap on picture to enlarge.

For shipping outside the USA email Sales@WineCountrySequential.com.
Used Roadcase * Prophet 600 * $45
Used Roadcase for Prophet 600 * 42" x 18" x 8" * 18 lbs. * Shipping as is
Used Prophet 600 Roadcase * SHIPPING INSIDE California
$45.00
Used Prophet 600 Roadcase * SHIPPING INSIDE USA
$45.00
Click or Tap on picture to enlarge.



Last Update: Nov. 17, 2025