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Octave-Plateau Cat Stick

“This one is new and has never been used. I bought some of these about 12 years ago from the guy who designed them and this is one of two left. These are rare and seldom come up. It comes in the original box and original paper back manual. There is “Turtle Beach” tape on the box (Octave Plateau later became Turtle Beach). As you may know, this unit has two LFOs and 4four VCAs. It works great with modular synthesizers. ” Click here to visit listing on eBay

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Octave Cat SRM

“Used: Octave Cat SRM with 2.5m Kenton CV/Gate Lead. UK Model.

In full working order. Nice condition with some age related signs of wear. (see photos)

Comes with Kenton’s CV/Gate Lead for Octave CAT which includes circuitry to support the non-standard voltages used by the CAT, allowing it to be controlled by other CV gear, or MIDI to CV converters.” Click here to visit listing on eBay

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Octave Plateau Voyetra Eight with VPK-5 Keyboard

“WORKING CONDITION: Excellent – Works great. All of the controls and parameters are working properly. Each key on the keyboard is responsive as well. The factory patches sound incredible. In all, everything is fully functional and in excellent working condition.

PHYSICAL CONDITION: Very Good – This specific version of the Voytra 8 comes with added MIDI ports on the back panel which replace the stock XLR-style jacks that were there originally. Very useful! There are the expected scuffs and signs of racking on the chassis and light normal use around the keyboard. Everything is very clean with each button, knob, and key perfectly intact. The ATA road case for the keyboard is also covered in stickers. The overall, physical condition is very good.

INVENTORY #50689

BRAND: Octave Plateau

MODEL: Voyetra Eight

FUNCTION: Poly Analog Synthesizer

PRODUCT DESCRIPTION: This listing is for an extremely rare Octave Plateau Voyetra Eight 8 Voice Poly Analog Synthesizer with VPK-5 61-Note Keyboard. This is the revered “Rev-4” version with the green circuit boards, tear-drop-style knobs, and MIDI Ports on the back.

This represents the sole known instance of a Voyetra Eight featuring conventional standard MIDI connectors on its rear, as opposed to the exclusive XLR jacks and adapters employed by all other Voyetra Eights. This exceptional configuration allows it to effortlessly and instantly integrate into any studio or stage arrangement.

Furthermore, it should be noted that this synthesizer holds historical significance as the world’s first rackmount Synthesizer. It is crafted entirely with discrete analog circuitry, a distinctive feature. Additionally, it boasts the presence of both SSM and CEM filter chips, an exceedingly rare trait within the realm of synthesizers.

The Voyetra 8 has been used by New Order, Depeche Mode, Eurythmics, Nine Inch Nails, and Trevor Horn (“Video Killed The Radio Star”)

For this listing, the synth was fully serviced by Chaz Labrecque the in-house tech and designer at Hans Zimmer’s Remote Control Productions in Santa Monica. Capacitors were checked and replaced if needed, the battery was replaced, and the velocity and aftertouch sensitive keyboard was completely disassembled, meticulously cleaned, and refitted with brand-new rubber contacts. All connections tested and given a clean bill of health for many years of music creation!” Click here to visit listing on eBay

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Octave CAT

“OCTAVE ELECTRONICS THE CAT SRM Used Synthesizer.

One of my favorite synth, Great condition like new I haven’t used it in a while just need simple minor cleaning.

Please see pictures. ” Click here to visit listing on eBay

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Octave Cat Project Machine

“THE CAT by OCTAVE SYNTHESIZER – made in USA ;

* has broken pots & switches & 1 key

* missing parts

* no idea, if any chips / caps need to be replaced” Click here to visit listing on eBay

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Octave Cat

“Vintage Octave Cat
Great condition manual and original cable
works as it should .
Any questions message
Will post but prefer collection ”
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Octave Cat Project Machine

“The Cat By Octave SRM Synthesizer – In Need Of TLC.

Here we have a rare 1978 The Cat by Octave SRM Synthesizer

In need of some work doing to get it back to fully working being nearly 50 years old!

Currently the Oscillator 1 is not working and the connection to the keyboard is not working, I have spoke to a specialist synth repairer who has worked on many famous producers Synths and the estimate for repair is between £300 and £500. Also the photo includes a photo of the missing sync button that will need to be replaced. I do not have the time to have this all repaired currently as we are in the middle of trying to purchase a house so have put this up for sale as is!” Click here to visit listing on eBay

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Octave Kitten

“All photographs are of the product for sale.


The Kitten has been electronically and cosmetically serviced by our technician. The synthesizer is in excellent working condition. Comes with schematic digram and service notes.”
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Octave CAT SRM

” Octave Cat SRM – rare and wonderful 70’s synth” Click here to visit listing on eBay

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Octave Cat SRM

“Octave Cat SRM – excellent condition ” Click here to visit listing on eBay

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Octave Kitten

“The classic Octave Electronics – The Kitten synthesiser.

Model 1214

Smaller sister to the Cat, this single oscillator mono synth sounds awesome. A very worthy alternative to the ARP or Moog’s of its era (this one comes from very early 80’s).
Has the ‘fun’ of 2 sub oscillators for a realllllly deep sound.

This machines works great and had a full service last year.
Cosmically in very good condition also as shown in the pics.” Click here to visit listing on eBay

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Octave Cat

“* Vintage Cat SRM II, factory new, never used
* One of the first and best sounding analog synthesizers ever made
* Genuine walnut wood side panels
* Includes original owner’s manual
* For more information about the Cat series, Google “Fandom Electronic Music Wiki Cat Synthesizer”

The Cat SRM II synthesizer was manufactured by Octave-Plateau from 1980 – 81. It is the best and final model of the Cat synthesizer series, which included the original Cat (1976) and Cat SRM (1978). We have been fortunate enough to acquire some New Old Stock (NOS) from Octave Plateau’s last production run in 1981. These units have never been used and were safely kept in storage since the day they were manufactured. If you’re an analog synth aficionado, this is an opportunity to own an authentic piece of electronic music history.

Here’s what we’ve done to this unit:

Replaced the original press-wood veneer sides with high-quality genuine walnut wood sides.
Calibrated and thoroughly tested every function to assure everything works as designed.
Cleaned and checked all switches, pots keyboard contacts, buss bar and electronic circuits.
Replaced the keyboard rubber bushings on all keys.
Replaced critical calibration single-turn trimmers with high-precision multi-turn trimmers for greater stability.
Included a foot switch that plugs into the back of the synthesizer and turns on the glide function when the switch is pressed, allowing a smooth glide between notes only when desired.

Cat SRM II Features:

Monophonic/duophonic keyboard plays two notes with memory function on second note.
Digital keyboard with single contact per key (more reliable than the dual-contact analog keyboard used on previous Cat models and most other analog synthesizers of the day).
Dual VCOs (CEM3340) with oscillator sync and mixable waveforms for complex tones.
Sub octaves on both VCOs for full, deep bass sounds.
Four-pole LPF (SSM2044) with adjustable keyboard tracking.
Versatile modulation system to create a wide variety of sounds.
LFO (with variable delay on sine output), S&H and dual envelope generators.
White noise generator.
Extensive expansion jacks on rear panel.

Although this unit has never been used, there may be some minor cosmetic imperfections, which is how it left the factory. Please refer to the photos for cosmetic details. This unit is sold “As-Is” and cannot be returned unless it arrives in a condition different from what is described or photographed in this offer. “ Click here to visit listing on eBay

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Octave Plateau Voyetra Eight

“For sale is a rare vintage Octave Plateau Voyetra 8 Rev 4 poly synth. Most desirable Rev 4 green circuit boards allowing for extra midi function features like responding to pitchbend and aftertouch. Green circuit boards are also supposed to have better long-term reliability. This is one of the most incredible and most powerful vintage analog synthesizers. It’s in good shape and fully functional. Classic must have synth for any serious collector, don’t miss out!” Click here to visit listing on eBay

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Octave Cat SRM II

“* Vintage Cat SRM II, factory new, never used

* One of the first and best sounding analog synthesizers ever made

* Includes Glide on/off foot switch

* Includes original owner’s manual and original literature for Octave Plateau products”
Click here to visit listing on eBay

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Octave Cat

“We have been fortunate enough to acquire some New Old Stock(NOS) Cat SRM II synthesizers from Octave Plateau’s last production run in 1981. These units have never been used and were safely kept in storage since the day they were manufactured. If you’re an analog synth aficionado, don’t pass up this opportunity to buy this legendary synthesizer. Once our inventory is sold, you’ll never get a chance to get one in this condition again.

The Cat SRM II was manufactured in 1980 – 81 and is the best and final model of the Cat synthesizer series from the mid-1970s, which included the original Cat and Cat SRM. It has stable Curtis CEM3340 oscillators, an SSM 2044 filter and a digital scanning keyboard that uses a single contact per key, which is significantly more reliable than the dual-contact analog keyboard used on previous Cat models and most other analog synthesizers of the day.

We have calibrated and tested these units to assure everything works as designed. The switches, pots keyboard contacts and buss bar have been cleaned and checked. We also replaced the original press-wood sides with high-quality genuine walnut wood sides and replaced the critical calibration single-turn trimmers with high-precision multi- turn trimmers for greater stability.

SRM II features include:

Monophonic/duophonic keyboard plays two notes with memory function on second note.
Dual VCOs (CEM3340) with oscillator sync and mixable waveforms for complex tones.
Sub octaves on both VCOs for full, deep basssounds.
Four-pole LPF (SSM2044) with adjustable keyboard tracking.
Versatile modulation system to create a wide variety of sounds.
LFO (with variable delay on sine output), S&H and dual envelope generators.
White noise generator.
Extensive expansion jacks on rear panel.” Click here to visit listing on eBay

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Octave Cat

“Great shape. 100% functional. Just had it serviced! Will come with original manual!” Click here to visit listing on eBay

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Octave Kitten

“Only small anomaly ,is a single missing red knob for a slider ,check photo (easy to find) ”
Click here to visit listing on eBay

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Octave Cat

“Vintage 1970s OCTAVE ELECTRONICS THE CAT SRM Model Analog Synthesizer, It’s been sitting for some time, it does power up and make a large variety of crazy synth sounds, all keys sound, one noticeable issue is the master volume seems to be just full on, I was able to test it by running it through a volume pedal. It will need repair and a general going over/tune up. I am selling it as is for repair. Thanks.” Click here to visit listing on eBay

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Octave Cat

“This synthesizer is in good working condition, and has been since I’ve had it since 2003. All functions work.

It is not cosmetically perfect – definitely shows use, but overall looks okay. Some of the front keys were cracked and re-glued at some point and have always worked fine. Also, the little black plastic caps that cover the trimmer pots were missing when I bought it, so I just put black electric tape over it to keep the dust out and has worked well and visually blended in ever since.” Click here to search for synths on eBay

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Octave Cat

“Octave cat Srm Synth. Condition is Used. Shipped with USPS Retail Ground.

The rare vintage synthesizer is in mind condition looks and sounds amazing !” Click here to search for synths on eBay

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Octave CAT

“Octave Cat 37 Keys Analog Synthesizer. Condition is For parts or not working, The synth powers up, and the oscillators, filter, LFO seem to be working, but the keyboard does not track the pitch so it’s difficult to tell what else isn’t. The Ab1 key is not working and the top C is dodgy, but all keys and springs are unbroken. No pots, sliders or switches are broken. I’ve had it for 30 years. It has not been abused, and has always been kept indoors.” Click here to search for synths on eBay

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Octave Cat

“Octave The Cat SRM. Condition is Used. I haven’t used it in a long time, works good just need some cleaning. Sold as is.” Click here to search for synths on eBay

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Octave Cat

“A genuine, working CAT SRM, and I’m the original owner, having purchased it on April 18th, 1980. Yup, exactly 40 years ago.

This unit was never abused, but it definitely was used in live performances. That explains the scuffed side panels; I didn’t have a road case for it. The control surface and keys are nice, but yeah, that wood could use a refinishing. Funny… I just noticed that an ebayer in the UK sells new side panels. Good for you, fella! Come to think of it, maybe you could just switch the panels left-to-right so that the “good” wood is now outside? Hmm…” Click here to search for synths on eBay

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Octave Cat

“The CAT synthesizer by Octave is in excellent condition, everything is working. One owner, purchased new in 1978. Original instruction manual is included. One of the silver colored disks is missing on one knob. The small square in the VCF section is a piece of mirror from a disco ball ? I will let the buyer decide if that should come off or not. Buyer to pay shipping with insurance. No returns.” Click here to search for synths on eBay

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Octave Cat

“For sale is The Cat by Octave. One of my top 5 favorite synthesizers but sadly i have to part with it as i lost my job. In excellent cosmetic and working condition.” Click here to search for synths on eBay

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Octave Voyetra Eight

“Like nearly all the high end vintage analog synths we sell, this item has been METICULOUSLY disassembled, cleaned inside and out, FULLY serviced by professionals who’ve been servicing and selling vintage synths for more than the last 2 decades, and systematically tested multiple times over a long period to ensure it’s working exactly as it should. No BS. No ebay surprises. We’re perfectionists and don’t cut corners. Although this instrument came to us in relatively good shape, we want our items to be better than the rest and invested *many* hours of tech time plus parts costs to fully overhaul this unit so it would be clean, working like new again and as reliable as possible for its next owner. This was a serious investment of time, love, and money, and was definitely worth the effort and is of course reflected in the higher than usual price. If you’re looking for a great sounding example of this model that works just like it should without needing to invest hundreds or thousands of dollars in tech fees and waiting from weeks to years, this one should make you very happy.

This is no ordinary Voyetra Eight. It’s been fully refurbished and future-proofed. But that’s not all. This one’s got our custom tuning stabilization mods to make it the instrument it should have been. For more info about these mods and why they are necessary, please read about it on our website. This process takes 60-80 hours of skilled labor, and this is naturally reflected in its high price. This one’s for the discriminating buyer who wants the best V8 money can buy. You will not be disappointed. ” Click here to search for synths on eBay

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Octave Cat

“Very rare Octave Cat synth (rev A – not SRM version) for sale. This version is the rarest version of this synth, with discrete low pass filter consisting of CA3080 OTAs. Sounds amazing!

This one has been fully gone through by one of So Cal’s best synth techs! Here’s a list of the services it has received:

All new keyboard bushings

All new gold plated CV and Gate Buss Bars

All circuit boards “re-capped” with new electrolytic capacitors

All sliders have been fully reconditioned (removed from pcbs, opened up, meticulously cleaned and re lubricated)

All new CMOS device ICs

Fully tuned and calibrated

Cosmetically 9/10! ”
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Octave Plateau Catstick

“Immaculate original beautiful condition and Working perfectly.

110V US plug.

Collectors Item. Super rare Vintage.

Original and very detailed owners Manual.

Originally bought to run a Moog system 55 although ended up running a Voyager and its expanders with a cp-251, truely sounds unreal.

Modified a 2RU for it to sit and near new step down transformer.

10ft snake cable.”
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Octave CATstick

“Immaculate original beautiful condition and Working perfectly.

110V US plug.

Collectors Item and in this condition, super rare Vintage.

Original Manual.

Modified a 2RU and new step down if requested.”
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Octave Cat

“Here is a vintage Octave Electronics Inc – Electronic Music Analog Synthesizer – Model 1853 The Cat. I believe these were made from 1976 to 1981. The serial number on this one is A1047 which seems pretty low compared to some of the others I have seen. If you are looking at this listing you probably know way more than I do about this synth. I spent about an hour with it hooked to an amp playing around with it. It does work – all the knobs and sliders will effect the sound depending on how other controls are set. It will produce some very very strong low tones that I was surprised with. I did finally get something that sounded musical out of it, it will make lots of very strange Pink Floyd-ish sounds as well. The only issue I noticed is there is no sound from key 35 (top black key) and key 34 has to pressed harder than the rest, the rest work ok. Some of the pots and switches have to be jiggled a bit to get a good contact, I think it would probably benefit from a good cleaning and service, its probably been a long time. Over all in good physical condition for its age – missing two of the gray slider tip knobs and could use a good cleaning. A neat machine from the early Analog era. Hope someone can give it a good home……”
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Octave Cat

“Only 2 owners. Purchased from a Pawn Shop in 1982 Los Angeles. Excellent condition. Works as it should. Serviced recently. One cool coffee ring on the side wood panel. Sounds extremely fat. Great monosynth with duophonic capabilites. Filters are very impressive.”
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Octave Cat

“Only 2 owners. Purchased from a Pawn Shop in 1982 Los Angeles. Excellent condition. Works as it should. Serviced recently. One cool coffee ring on the side wood panel. Sounds extremely fat. Great monosynth with duophonic capabilites. Filters are very impressive.” Click here to search for synths on eBay

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Octave Cat

“The Cat Analog Synthesizer By Octave Plateau. Condition is Used.

All work as it should but needs cleaning/service, been sitting around in my smoke free studio for years not being used because I’m using the SRM model. Sold as is”
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Octave Cat

“Selling The Cat for a real deal, I purchased this while on the road from SwitchedOn in Austin, TX. It had just been serviced. It’s an old synth, it still work great and only has a few cosmetic blemishes.” Click here to search for synths on eBay