Sequential Circuits Prophet-10 promotional sticker from 1981.
Used ProphetŪ10 Parts * Power Switch and Panel Mount Audio Jack for $20
Used Original Prophet-10 Parts * Power Switch and Panel Mount 1/4" Audio Jack
#I-417/LM317K for the Prophet-10 variable power regulator $20
Click on picture to enlarge
Original Transformer & Heatsink $45
Original Prophet-10 Transformer & Heatsink
****Prophet-10 Corcom Power Jack*** Fuse & Voltage Select Card included **$35**
Housing, Fuse, & Voltage Select Card
Original Prophet-10 Voltage Select Power Jack
Used Original Board#8 for ProphetŪ10 $25
<< PDFs of Original Sequential Circuits Prophet-10 Spec Sheets from 1980
Used Exatron stringy cassettes $10 each
Exatron Stringy Tape Drives are mounted in the front under the Sequencer.
The Prophet-10 Operating System consists of 3 ROMs. OS Version 4.0 is for Prophet-10s with the front mounted Exatron tape drive, Version 5.0 is for Prophet-10s with the side mounted Braemer tape drive, and Version 6.1 is for all Prophet-10s with MIDI installed. A MIDI kit installation will permanently disable access to the Exatron tape drive and sequencer, but the Braemer tape drive and sequencer will continue to operate with MIDI installed. The 3 socketed MIDI OS ROMs are labeled as 0, 1, and 2.. and can be seen in the adjacent picture. The MIDI ROMs are labeled 0TEN6.1, 1TEN6.1, and 2TEN6.1
Prophet-10 CPU board with 3-chip set Operating System.
Last Update: August 18, 2026
Wine Country Productions, Inc. has discontinued use of the
PROPHET®, SEQUENTIAL®, and Sequential Circuits trademarks
in commerce worldwide on September 18, 2026
PROPHET® and SEQUENTIAL® are trademarks of SEQUENTIAL® LLC
and were used by Wine Country Productions Inc. under license
