“Complete mechanical and electronic restoration
• All electrolytic capacitors replaced
• All pots and sliders removed, disassembled, hand cleaned, and re-greased
• All key bushings replaced
• Modern IEC input installed
• Bus-bar cleaned
• Solder traces inspected and reflowed cold or bridging
Unit was already partially restored within the last few months, and Boomer with LA synth Co finished things up. Shows some very light aesthetic wear but overall in very nice shape. Plays and sounds amazing and has absolutely no problems functionally.”
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“This synthesizer is in good working condition, and has been since I’ve had it since 2003. All functions work.
“Octave cat Srm Synth. Condition is Used. Shipped with USPS Retail Ground.
“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.” 
“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.” 
“A genuine, working CAT SRM, and I’m the original owner, having purchased it on April 18th, 1980. Yup, exactly 40 years ago.
“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.” 
“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.” 
“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.
“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!
“Immaculate original beautiful condition and Working perfectly.
“Immaculate original beautiful condition and Working perfectly.
“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……”
“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.”
“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.” 
“The Cat Analog Synthesizer By Octave Plateau. Condition is Used.