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

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

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

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

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

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

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 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

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

Octave CAT

“Vintage Octave Cat SRM Synthesizer. Condition is For parts or not working. Listed as such because we dont have proper equipment to test really. Found in attic. Powers up. Body is clean and has all knobs. Tried taking it to friends house to test with cords and amp but not sure we hooked it up right or adjusted properly. All knobs seem to make sounds change, and at one point we got the keyboard to work ( kind of) but not sure how and then we couldnt get it to work again. Sold AS IS.” Click here to search for synths on eBay

Octave Cat

“Only 2 owners. Purchased from a Pawn Shop in 1982 Los Angeles. Excellent condition. Works as it should. Serviced recently. One 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

Octave Cat

“This item looks in great condition but I have no means of testing it and is the reason why I’m selling as is. This same item sold on eBay for much more for parts only. I’m sure it works to it’s full potential.” Click here to search for synths on eBay

Octave Cat

“Pre-SRM model, super clean, works and sounds great. Much richer tone than either of the later SRM models. Comparable to Mk. II Arp Odyssey (2810) except many more routing and sound shaping options. One of the most versatile monosynths ever made, a superb solo/lead instrument, an insane FX machine, an absolute joy to play.

This unit has holes drilled for CV/gate (non-standard) but interface does not work. so just consider this as a standard pre-SRM Cat that can be easily modded in the event you want to add CV/gate.” Click here to search for synths on eBay

Octave Cat

“Rare Octave The Cat analog synthesizer, their answer to the ARP Odyssey.

Recently refurbished by one of the best synth techs in SoCal so that the electronics are as good as the cosmetics (many Cats look great but are electronically thrashed – not this one).”
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Octave CAT Project Machine

“100% analog, old-school duophonic nastiness! Created in 1976 as an Arp Odyssey clone, Octave added a few of their own features, including the ability to (sort of) play the 2 oscillators independently, but the real character of this instrument comes not in playing melodies but in the distinct, gnarly filter and the myriad modulation possibilities on this instrument. You can make the 2 VCOs modulate each other, then modulate the filter, which is also modulated by the LFO and the repeating AR envelope, and tweak all kinds of amazing drone textures into life. I’ll really miss this beauty, but truth be told, it needs some love. I had it serviced about 8 years ago when I first bought it, but it seems the oscillators do not sound without the filter Q being at max, and the volume overall is low, so I suspect the VCA may need replacing. You can definitely get great sounds out of this beast as-is, but for maximum potential, it will need some love from a technician.” Click here to search for synths on eBay

Octave CAT

“Great sounding antique board (pre-1980s) with a killer filter and some unusual gnarly effects via its flexible modulation capabilities. Oscillator sync, sample and hold, audio rate frequency modulation of both the filter and oscillators, duophonic mode and did I mention the filter? Yeah, it’s pretty sick. Screams like a banshee. In fact, I believe Arp sued them over cloning their design of the original Odyssey.

It’s been in dry storage for some time, but it still plays and sounds great. The original filter was replaced with a new old stock OEM chip that was tough to track down, and it had a thorough check up by a reputable vintage synth tech shortly before going into storage.

I have cleaned the j-wires and bus bars so the keys trigger great and all controls function smoothly and quietly. It looks great for its age with no serious physical defects and plays like new.” Click here to search for synths on eBay

Octave Cat

“Amazing Synthesizer!!! The Cat by Octave. Mono and DUAL Oscillator to give amazing tone. Check out online clips of this, it’s such a nice synth. Great condition!!! I’ve played this for scopula of years now and love it. Comes from a temperature controlled and Smoke-free environment. Never took this out to gigs. Cosmetically in great shape, a couple marks in the wood siding. The synth sounds amazing. ” Click here to search for synths on eBay

Octave Cat SRM II

“This one is brand new in the original box with the manual + brochures. It is working 100%! Prior to the listing, it had been calibrated as it’s been sitting wrapped in it’s box for over 37 years. I have several available! This model is last of the series, the SRM-II. It uses CEM 3340 (oscillators) and a SSM 2044 (filter). ” Click here to search for synths on eBay