1976 Paia Model 4700 Analog Modular Synthesizer Deep Dive

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video upload by Mears

"A deep dive on this rare, and synthesizer almost 50 years old. I've spent countless hours restoring it, and am very pleased with the results. It can produce a wide range of sounds, thick and beefy baselines, pillowy ambient textures, fat analog drums and so much more! This video covers the features of the synth, detailed shots and explanations of the restoration and internal components as well as a ton of high quality audio recordings of the various sounds this synth can produce.

Here's where you can find a whole bunch of great info about this synth: https://modularsynthesis.com/paia/470..."

via this auction

"Really neat vintage synth, in great working condition. I restored it electronically 3 years ago, and have only used it in my home studio. I'm the second owner, and acquired it directly from the original owner whom purchased it in the 1970's, I believe it's from 1976. I have a bunch of paperwork for the synth somewhere, if I can find it(I'll try, it's buried in boxes somewhere!) I'll include it as well. It's worth noting that during the restoration, I preferred to keep the synth as original as possible, but electronically stable, and to make a 50 year old synth as reliable as possible. It includes and uses the original "pin" cables, so neat & rare. That being said, it's still a very old synth, from the early days of modular synths, when slight changes in mains voltage and temperature variations manifested themselves in "interesting" ways. I'd assume that the purchaser of this synth understands that and doesn't expect the oscillator tracking and tuning stability to be similar to modern synths. Please watch the Youtube video I created for this synth, which goes into great detail about the synths condition, and should answer any questions you have, and give you a clear idea of what to expect if purchasing.

One last thing, this will have to be sent in 2 boxes, and the synth is fairly heavy(each piece is 11kg on it's own). The shipping rate on the listing is not representative of what the actual shipping cost will be, so please if purchasing, expect that the shipping rate will be higher than indicated on the listing. The calculated shipping on Ebay doesn't accommodate multi-box shipments unfortunately. Feel free to contact me for a shipping quote, and if you purchase, please wait for me to provide you with a quote before sending payment. I'll do everything I can to keep the shipping cost as low as possible, but also make sure it arrives safely.

Thanks! Restoration Features
Re-capped
Except keyboard
Only excellent quality, brand name, high life caps used throughout(Rubycon, Nichicon, Illinois Capacitor)
Power supplies rebuilt
Rails
Caps
Plugs
Resoldered all connections
Rebuilt cables
Added 3 Prong power cable to synth, keyboard has original 2 prong plug
Spring reverb
Original parts kept(not pictured, but included)

General Features
Analog
3 voltage controlled analog Oscillators
Multimode voltage controlled analog filter
12 step sequencer with microtuning with outs for each step and glide
Spring Reverb

Considerations & known issues
Missing some faceplate screws
Keyboard not recapped, but works great
2nd step led on sequencer only works sometimes
Oscillators work okay as is, but could use with a retuning.

Includes
Modules
3x 4720 Oscillators
1x 4712 Reverb(Spring Reverb)
1x 4780 Sequencer
2x 4710 Balanced Modulators(VCA’s)
3x 4770 Watt Block’s(Power Supplies)
1x 4761 Wing(passive patching)
1x 4730 VCF(multi-mode filter)
2x 4740 Envelope Generators
1x 4711 Mixer(4x2 stereo)
1x Noise/LFO
37-key keyboard w/cover
Cables
1x ⅛” to ¼”
20x ⅛”TS to ⅛”TS, various lengths from 6” to 5ft
21x Pin cables
Original parts(not pictured)

Notes
Paia website with lots of great info(https://modularsynthesis.com/paia/4700/4700.htm)
I’m the 2nd owner, originally owned by local electronics engineer
Believe it was built in 1976."