Sequential Circuits PROPHET VS RACK Digital Vector Synthesizer with 1.2 OS SN 0302

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via this auction

"The Sequential Circuits PROPHET VS RACK digital vector synthesizer. Rare (unobtainium), and even rarer in this MINT- rack face condition and with these specifications.

The second to last instrument Sequential ever made, less than 200 of these Prophet VS Racks were actually made, all in 1987. At the time, the Prophet VS Rack was considered a minor product by the company itself (no separate Operations Manual for the Prophet VS Rack was produced, and the color Prophet VS keyboard brochure was simply "updated" with a note on the front that stated "Now Available in Keyboard and Rack-Mount Versions!"). At the time, Sequential was intent on launching the ill-fated Prophet 3000 sampler, whose failure ultimately forced the company to fold late in 1987. (That is, until Dave Smith Instruments changed its name to Sequential in 2018!)
This sale includes:

Sequential Circuits PROPHET VS RACK digital vector synthesizer (user switchable USA/EU voltage (110v or 220v)); yes, this is the only model that includes the musically distinctive vector waveform synthesis (realtime joystick controlled modulation/mixing of four unique high-quality digital waveforms), with the warmth of true analog filters (VCF) and amplifiers (VCA), DUAL LFOs and analog chorus. The Prophet VS stands in a class of one with a most unique sound signature that is a true joy to play and hear;
Original Vector Joystick, Data Entry slider knob, Balance knob and Master Volume Knob (most Prophet VS Racks suffer from non-original "replacements" of these unobtainium items).

Operating System Ver. 1.2 (rare and last, most expansive and most stable OS version) (see photo of startup screen "Sequential r1.2"). This OS was only available from Sequential by installing special IC chips.
Internal memory bank fully populated with both stock AND CUSTOM PATCHES
Original paper Owners Manual for Prophet VS (Sequential only ever made one version of the Operations Manual for the Prophet VS, hence the picture of the keyboard version on the cover)
Original October 2018 paper receipt from an established (storefront & website) vintage synthesizer repair shop in Seattle, Washington detailing the master synth technician's inspection and internal cleaning of this instrument, including lithium battery power measurement and recommended diode and capacitor replacements (which receipt confirms such recommended replacements were indeed performed)."