SequentialCircuits.com

Home of the PROPHET® and all SEQUENTIAL CIRCUITS instruments.

1981 Vintage PROPHET Poster by artist John Mattos
The "SEQUENTIAL® Sound" in 1983
Sequential Circuits Retail Price List for the January 1983 NAMM Show.
Notable artists using Sequential Circuits Prophet-5 and Prophet-10 circa 1983.
Original Sequential Circuits Program Data Cassettes *** Vintage Collectables * Prophet-5 * Prophet 600 * Multitrak * $25 each
Original Sequential Circuits Data Cassettes * Each cassette protected in a plastic case.
Original Prophet-T8 data cassette SOLD OUT
Original Drumtraks data cassette SOLD OUT
Original Multitrak data cassette SOLD OUT

Click or Tap on data cassette pictures to enlarge.
Original Prophet-5 Rev3.3 data cassette of 120 factory programs includes a plastic case * SHIPPING INSIDE USA.
$25.00
Original Prophet-5 Rev3.3 data cassette of 120 factory programs includes a plastic case * SHIPPING OUTSIDE USA.
$25.00
Original Prophet 600 data cassette of factory programs includes a plastic case * SHIPPING INSIDE USA.
$25.00
Original Prophet 600 data cassette of factory programs includes a plastic case * SHIPPING OUTSIDE USA.
$25.00
** Prophet 600 Diagnostics DIAG6 ** Eprom $30 *** Bin File $19.97
DIAG6 Prophet 600 Diagnostics ** Eprom delivered via USPS ** Bin file delivered via email SEE DIAG6 INSTRUCTIONS BELOW
DIAG6 Prophet 600 Diagnostics Eprom * SHIPPING INSIDE USA
$30.00
Document
DIAG6 Instructions
DIAG6 Prophet 600 Diagnostics Bin File DELIVERED BY EMAIL
$19.97
 
*** Sequential Circuits Memorabilia ***
THE First MIDI Operating System Prophet 600 Six-0-1 OS ROM * SOLD
The Prophet 600 is the World's First MIDI synthesizer
25 Prophet 600s shipped UPS on December 27, 1982
At that time no other MIDI synths existed so these 25
Prophet 600s could ONLY connect via MIDI to another Prophet 600.
In December of 1982 Sequential Circuits shipped 25 Prophet 600 keyboards with OS Six-0-1 These Prophet 600s became the world's first commercially available MIDI synthesizers.
  
Vintage Sequential Circuits SIXTRAK Promotional Stickers * Ten (10) for $10
Ten (10) Vintage SIXRAK Promotional Stickers with pressure sensitive adhesive backing
Ten (10) Vintage SIXTRAK Promotional Stickers SHIPPING INSIDE USA
$10.00
Ten (10) Vintage SIXTRAK Promotional Stickers SHIPPING OUTSIDE USA
$10.00
  
Original Prophet-T8 Wooden Key * $8 Souvenir * Memento * Pieces of T8
White Key from Original Sequential Circuits Prophet-T8 keyboard
White Key from Original Sequential Circuits Prophet-T8 keyboard * Side View
Original Prophet-T8 White Wooden Key * Souvenir * Memento * SHIPPING INSIDE USA
$8.00
Original Prophet-T8 White Wooden Key * Souvenir * Memento * SHIPPING OUTSIDE USA
$8.00
Original T8 Black Wooden Key * $8
Black Key from Original Sequential Circuits Prophet-T8 keyboard
Original Prophet-T8 Black Wooden Key * Souvenir * Memento * SHIPPING INSIDE USA
$8.00
Original Prophet-T8 Black Wooden Key * Souvenir * Memento * SHIPPING OUTSIDE USA
$8.00
Original Sequential Circuits Brochures Prophet VS*Prophet 2002*Prophet 3000 Three (3) Brochures for $12
Three (3) Original Sequential Circuits Brochures: Prophet 2002 * Prophet VS * Prophet 3000
Three (3) Original Sequential Circuits Brochures: Prophet 2002 * Prophet VS * Prophet 3000 * SHIPPING INSIDE USA.
$12.00
Three (3) Original Sequential Circuits Brochures: Prophet 2002 * Prophet VS * Prophet 3000 SHIPPING OUTSIDE USA.
$12.00
**** Original MIDI Chart MIDI-5 **** for 10 Sequential Circuits instruments Vintage 1985 ** $6
Original Sequential Circuits MIDI Control Summary Chart MIDI-5 covering 10 SCI instruments Drumtraks * Prophet 600 * Prophet-5 * Prophet-T8 * Prophet 2000 * MAX * Split-8 * Sixtrak TOM * Multitrak ** 2 sides ** Rigid Cardstock Paper Folds Out to 11 inches by 17" inches
Original Sequential Circuits MIDI Control Summary Chart (MIDI-5) covering 10 SCI instruments SHIPPING INSIDE USA.
$6.00
Original Sequential Circuits MIDI Control Summary Chart (MIDI-5) covering 10 SCI instruments SHIPPING OUTSIDE USA.
$7.00
Original MODEL 64 Op Manual * $7
Original Operations Manual CM64A for the C-64 Sequencer & Commodore 64 computer January 1984 * Collector Quality Condition
Original Operations Manual for the C-64 Sequencer * Collector Quality Condition * SHIPPING INSIDE USA
$7.00
Original Operations Manual for the C-64 Sequencer * Collector Quality Condition * SHIPPING OUTSIDE USA
$7.00
 
********* Originals ********* Sequential Circuits Service Publications ** Collector Quality Condition **
Sequential Circuits Service Department Original Field Bulletins
Two (2) original Sequential Circuits Inc. Publications * Field Bulletins #8 August 1982 and Publications Index TN10 August 1985 ** Collector Quality Condition
Two (2) original Sequential Circuits Inc. Publications * Field Bulletins #8 and Publications Index TN10 in Collector Quality Condition SHIPPING INSIDE USA.
$15.00
Two (2) original Sequential Circuits Inc. Publications * Field Bulletins #8 and Publications Index TN10 in Collector Quality Condition SHIPPING OUTSIDE USA.
$15.00
Four (4) original Sequential Circuits Inc. Publications * Field Bulletin#7 May 1982 * Field Bulletin #12 July 1984 * Field Bulletin #13 April 1983 * Field Bulletin #14 July 1985 Individually Stored in Clear Plastic Bags for decades in Collector Quality Condition
Four (4) original Sequential Circuits Inc. Publications * Field Bulletins #7, #12, #13, & #14 in collector quality condition SHIPPING INSIDE USA.
$22.00
Four (4) original Sequential Circuits Inc. Publications * Field Bulletins #7, #12, #13, & #14 in collector quality condition SHIPPING OUTSIDE USA.
$22.00
 
************ FOR SALE *********** SEQUENTIAL CIRCUITS Domains SequentialCircuits.net SequentialCircuits.org SequentialCircuits.info SequentialCircuits.us SequentialCircuits.com
  
 
 

Last Update: Sept. 18, 2026