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Prophet-5 – Rev 3.3 (#5715) w/ Kenton MIDI
Brokered Sale for our UK Client
Came into stock: December 2025
Servicing Status: A full KSR service will be carried out at the point of sale.
Overview
We are delighted to offer this Sequential Circuits Prophet-5, serial #5715, the highly regarded Rev 3.3 specification, fitted with a professionally installed Kenton MIDI interface.
This example is being offered through RL Music on a brokered basis and comes from a long-standing UK client and private collector.
The Rev 3.3 is the final and most refined revision of the Prophet-5 line, benefiting from improved architecture, Prophet-10 PSU specification, enhanced stability, and full compatibility with modern MIDI retrofits such as the Kenton system fitted here.
Provenance & Background
This Prophet-5 arrives from a private, climate-controlled home studio environment, having been used sparingly and maintained with care.
As part of our standard pre-sale preparation, RL Music will commission KSR (Kent Spong Restorations) to undertake a complete service at the point of sale, ensuring the instrument is delivered in optimal condition for its next owner.
The professionally installed Kenton MIDI system provides reliable integration with modern setups while preserving the classic Prophet-5 design.
About the Rev 3.3 Prophet-5
The Rev 3.3 is widely regarded as the most reliable and stable production version of the Prophet-5. Key features include:
- CEM3320 filter and CEM3340 VCOs
- Fully featured Poly-Mod section
- Unison and Chord Memory modes
- Prophet-10–specification power supply
- The most refined tuning behaviour of all revisions
- Ideal architecture for MIDI retrofits
The result is the quintessential Prophet-5 sound: warm, punchy, and unmistakably American — the sonic signature of countless classic recordings.
Technical Condition (Updated)
This Prophet-5 Rev 3.3 will undergo a complete KSR service prior to handover, ensuring future operational stability and reliability.
Work includes:
- Full electronic inspection
- PSU rebuild where required (Prophet-10 spec)
- Calibration of all five voices
- Key-bed servicing (bushings, contacts, alignment)
- Control panel testing and restoration of switches/pots where needed
- Inspection of internal boards, regulation stages and critical CEM ICs
- Verification and optimisation of the Kenton MIDI installation
- Extended soak testing to RL Music standards
The instrument will only be released once it passes full KSR certification.
Cosmetic Condition
This Rev 3.3 (#5715) presents in very good vintage condition, with only light signs of age:
- Original walnut side panels with gentle, natural patina
- Clean front panel with intact graphics
- Original knobs, switches, caps, and panel hardware
- Rear panel and serial plate clean and unmarked
A very attractive and authentic example, ideal for both collectors and professional studios.
Features & Enhancements
- Prophet-5 Rev 3.3 (serial #5715)
- Professionally installed Kenton MIDI (MIDI In/Out/Thru)
- Full KSR service at point of sale
- Known provenance and long-term collector ownership
- 3-month RL Music warranty
- 230V UK-spec power
Handy Links
Why Buy a Vintage Prophet-5?
1. The definitive American analogue polysynth
Phil Collins, Peter Gabriel, Japan, Talking Heads, Vangelis, Prince — the Prophet-5 helped define the late-70s and 80s sound.
2. The legendary Poly-Mod section
Unique to the Prophet-5, Poly-Mod remains one of the most expressive and musical modulation systems ever created.
3. Rev 3.3 = the most stable and reliable version
Excellent calibration behaviour, improved PSU, and compatibility with modern MIDI systems.
4. MIDI-equipped and studio-ready
The Kenton retrofit makes this a true vintage classic that integrates perfectly with today’s hardware and DAWs.
5. Mix-friendly by nature
Punchy, warm, and harmonically rich — it sits beautifully without dominating the arrangement.
6. A blue-chip vintage investment
Serviced, original Rev 3.3 units remain highly sought after and continue to appreciate in value.
Packing & Shipping
We can ship this Prophet 5 worldwide. Packing, shipping, and insurance costs are not included in the sale price and are quoted individually.
Please note: crating materials are custom-made per instrument, so minor delays may occasionally occur while packaging is produced.
We are happy to discuss your requirements — email us with any questions or for a personalised logistics quotation.
Sales Price
- £6,900 GBP
As this is a brokered sale, VAT is not applicable to UK buyers on the sale of the instrument.
Packing, shipping, and insurance services — if required — are subject to VAT @ 20%.
Availability
This Prophet 5 is available now.
More Pictures coming shortly!
We are currently preparing a full set of high-quality photographs, which will be added to this listing shortly. A client-supplied image is shown below of the actual Prophet 5 for sale, but should you wish to request any specific images — for example, detailed panel views, internal assemblies, or serial identification plates — please contact us, and we will be pleased to arrange these for you.
