Paia 2720 Power Supply

“One of several modules from a box containing PAIA Modules, as pictured. Untested and includes everything pictured, most of the modules have a small bag with them containing the “pin jacks” that were removed. The faceplates are as pictured and many have a rather ugly look to them, never tried cleaning them up. No returns as these listings are as seen for parts or repair NO INTERNATIONAL SHIPPING – thank you!”
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PAiA 2720 Modular Synthesizer

“Vintage analog modular synthesizer – PAiA 2720 – c.1974 + 10 modules:

• 2720 – Power Supply
• 2720-1 Voltage Control Amplifier
• 2720-2 Voltage Control Oscillator
• 2720-4 Function Generator
• 2720-5 Control Oscillator
• 2720-11 Envelope Follower
• 2720-12 Inverter/Buffer
• 2720-14 Sine/PWM (Pulse Width Modulator)
• Bandpass Filter
• Low Pass Filter

Included is PAiA Catalog from 1974, soundsheet demo record, and book of demo score and patches. I also have a few extra parts.

Physical condition good, as shown in pics. Keys move freely.
Note that I do not know how to operate it and have not tried to turn it on.
Therefore, it is listed as not working. I do know that it was assembled professionally and worked when built. Will probably need some restoration. ” Click here to visit listing on eBay

Lot of PAiA Modular Synthesizer Modules

“PAIA Synth Modules from the ’70’s. VCA,VCO,Envelope Generator. Sold AS-IS. Condition is “Used”.

These worked perfectly…40 years ago!!! So have to sell them as-is because I couldn’t test them.
Everything looks good but ya know, after so many years you might be replacing some capacitors. Who knows.
I had a whole PAIA rig that these came from, all in a custom wooden enclosure and used the synth playing out.” Click here to visit listing on eBay

PAiA Function Generator

Made by Paia Electronics
Circa 1983
This is a module that can generate Shepard Tones, also known as Barber pole tones. These are tones that appear to continously go up or down. It is an audio illusion. Look it up on youtube or google.
It requires a number of hook ups to a cv controlled synth.
Also look up Paia ek-9 to get the instructions and article by John Simonton (RIP John).
Great for you more adventurous modular synth guys out there.” Click here to visit listing on eBay

PAiA Fatman

“Paia Fatman Desktop Synth. Condition is “Used”.

I bought this on here from the original owner about a year ago before I knew very much about what kind of synth setup I want.

This unit is for someone who likes old school equipment and knows how to work on synths,etc.
I’m wanting something a bit more modern and automatic.

It has all the original paperwork and plans,I had it serviced with Thesis Audio over Christmas.”
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PAiA Fatman

“I bought this on here from the original owner about a year ago before I knew very much about what kind of synth setup I want.

This unit is for someone who likes old school equipment and knows how to work on synths,etc.
I’m wanting something a bit more modern and automatic.” Click here to visit listing on eBay

PAiA 4700 Series Modular Synthesizer

” You’re bidding on an analog “patch cord” monophonic synthesizer that contains all of the fundamental modules needed for music synthesis. I assembled this synthesizer in 1980 using 4700-series kits from the legendary PAiA Electronics, Inc. in Oklahoma.

This synthesizer was in “working” condition before I stored it away. I was already an experienced electronic kit assembler at age 18 when I assembled all of the modules. I used terminal strips to create “bus bars” inside the module cabinets to conveniently provide the three supply voltages (plus ground) to all of the modules. Once I got to college at PSU I begged an Electrical Engineering professor let me use a frequency meter in a lab to calibrate each key of the keyboard to the proper pitch. I recently applied power to the cabinets and proved that the power supplies are working, but their output voltages will need to be recalibrated according to the manuals. I say that this unit is “working”, but I never really got it to make the sounds I was hoping for…” Click here to search for synths on eBay

PAiA 2700 / 4700 Modular Synthesizer

“For sale is a vintage PAiA Modular Synthesizer.

Comes as shown. Untested. Not all of the modules appear to be fully connected (loose wires to busboard) and some aren’t screwed into the frame. I have NOT even tried to power this one. Assume it will need some sort of going over/repair to get it up and running.

Some of the RCA connectors have oxidation. The bandpass filter has 1/8” jacks instead of RCA. There are a few and knobs missing. There are two reverb tanks mounted inside for the 2 reverb modules.

The outer case has a little wear and some peeling near one of the edges. From a smoke-free home. “ Click here to search for synths on eBay

PAiA 2720 Modular Synthesizer

” Up for offer is a non-working PAiA 2720 Analogue Modular 1970s Synthesizer for parts or restoration. Features 8 components: pitch/trigger out, power supply, voltage control oscillator, function generator, low pass filter, bandpass filter, control oscillator and voltage control amplifier. Some keys are sticking and have yellowed and wood block that holds pitch/trigger out needs to be replied. Nice Moog-era vintage piece. I have too many projects so I will be offering up more vintage PAiA in future listings. Thanks for looking and stay safe.”
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PAiA 4700 Modular Synth

” As found. I am unable to test other than pressing the red button on module 4740. When pressed, the left LED comes on quickly then goes out, and the right LED stays on as long as the button is held.
Physically in decent condition. LMK if you want more photos / have questions.
Includes modules: 4712, 4720, 4730, 4750, 8780, 4740, 4710, 4771, 4761″ Click here to search for synths on eBay

PAiA 2720-3L VCF Low Pass Filter

“PAIA 2720-3L VCF Low Pass Filter + Extras
This auction is for the lower 48 States.

Hi. You are bidding on the pictured items. A PAIA 2720-3L VCF Low Pass Filter
Module. I have tons of PAIA Synth Modules and it’s time to start finding new homes for some of this gear. This is but one of the many Modules (from the 1970’s) by PAIA Electronics that introduced us to Modular Synthesis in an affordable, kit building experience. Be advised that you are purchasing a vintage PAIA Synth Module that is 100% functional and is being sold without return.

Included in this auction is the October 1973 edition of POPULAR ELECTRONICS.
This edition has an article: “INTRODUCTION TO ELECTRONIC MUSIC” by Don Lancaster on page 35 and a classified ad for Paia Electronics on page123. This ad is for the Synth Kit that would have included this Module.” Click here to search for synths on eBay

PAiA Gnome Project Machine

“Vintage PAiA Gnome (3740) Analog Ribbon Synthesizer. Made from kit. Dates to the 70’s (specifically 1975/1976), judging from the info I have found online. Item was working, but stopped making any sound. Needs a power supply (was originally being run off of two 9 volt batteries, but this connection has come loose). Has a 3.5mm mini jack for audio output.

Not sure of the exact issues as to why the unit no longer functions. Item is being sold for parts/as is. The item is NOT FUNCTIONAL and needs repair. ” Click here to search for synths on eBay

PAiA 3790 Chord Egg

“A Chord Egg synthesizer in working condition, in a crude home-made cabinet with a built-in AC power supply. Please read the full description and examine the pictures carefully, they are an important part of the description.” Click here to search for synths on eBay


If you like Paia synths you know what this is.
Untested, will probably need some calibration and wire rework.
Simultaneous outputs for ramp, triangle, pulse.
Some rust in front top right corner and back.” Click here to search for synths on eBay

PAiA Synthesizer Power Supply

“PAIA Synthesizer Module Power Supply. Condition is Used. This is a 2700 power supply. Nice features for a synth project or Paia restoration. Unknown working condition but looks to be intact. Front panel has a lot of grime/rust but it seems to come off with my fingernail so it should be able to be cleaned ok.” Click here to search for synths on eBay

PAiA Electronic Synthesizer Module Kits

“PAIA Electronic Synthesizer Module Kits 9730/K, 9710K, and 9710frm Unassembled. Condition is For parts or not working because I have no way of testing them before assembly. These are electronic kits from years and years ago. These came to me unopened, so I assume they are unchanged from the factory, so all the parts should be there. I have no way to be sure. The 9710K and 9730/K kits each include a pre-drilled printed circuit card. The 9710frm kit contains a pre-drilled, pre-printed control panel blank. There are NO instructions or diagrams, just the information sheets seen in the photos. If you are a PAiA synthesizer enthusiast, you will know what these are. I hope they will be useful to you! You are bidding on the set of three kits, not individual items. Happy bidding!” Click here to search for synths on eBay

PAiA Model 4700 with PAiA Oz

” model 4700 modules as seen in double rack case, there are 2 8700 modules as well
includes OZ mini Keyboard
no cables included
great shape
I had my tech bench test it and he said it was working
Please note that it was not serviced, only tested – it is older may need some tweeking and adjusting” Click here to search for synths on eBay

PAiA Gnome

“Up for bids is a Paia Gnome 3740 Analog Micro Synthesizer.
Unit is in very good cosmetic condition and works in a general way.
Tested using a keyboard amplifier. It may need work; it seems to have low, but audible volume (may need preamp?) and we aren’t sure if effects are fully functioning.”
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PAiA Fatman

“Classic analog synth, everything works great, comes with power supply. Midi in and thru, channel controlled by dip switches. Great sounding fat bass and liquidy acid lines and a nice snappy envelope. Great little synth for the money, and cool Moog Style k obs make this one really look great!” Click here to search for synths on eBay

PAiA 9700 Modular Synthesizer

“Paia 9700 series modular synth rig has been meticulously soldered with high-end audiophile solder. This unit includes a 8 step sequencer that incorporates the Ken Stone Sequential Switch ([link removed by eBay]) which is routed to a set of 8, completely bypass-able, control voltage knobs. This unit has two transformers, and two power supplies. One for the 9700 modules and one for the sequencer/potentiometer bank. This has been working in my smoke-free studio for 10 years. VCO 1v/octave tracking may need re-calibration, which is easy: I will include paper instructions and documents for each and every module including power supplies. Wooden case is sturdy white oak. Includes a handle on one side. Three power indicating LED’s are on a front panel that includes a few multiples (3.5mm and 1/4″ jacks wired in parallel), but the LED’s are not currently connected- this doesn’t effect function. This rack has plenty of LED’s!”
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PAiA 4780 Sequencer

“If you are a PAiA Phan you know what this is and how rare it is! There are a few scratches on the face plate, as you can see. Also my beefy power supply kept blowing the 1/8W 47 Ohm resistor so I am including a few 1/4W for your DIY hands to replace. My eyesight and unsteady hands would only make matters worse! Last time (before it blew) it was working fine as were all the LEDs.

If you are not familiar with the PAiA 4700 series of modules this is not the sequencer you seek. It is not Eurorack (it’s not even FRAC and PAiA invented FRAC!). The power this puppy uses is +18, +/-9V and Ground. Those are not banana jacks for the CV and trigger outs. And because the pin jacks are not grounded, you would need to run a ground wire between the sequencer and whatever you are sequencing (Unless – of course – you are mounting the modules in a PAiA system cabinet using a common ground).

Having pointed out all the caveats, this is an incredible device. It is expandable with other 4780 sequencers. I has 3 running at one time. It’s a maximum of 12 stages. This turns it into an amazing envelope generator or LFO.

I will include some pin jack cables and I think I may even have pin to 3.5mm. I will also included the using and assembly guides.”
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PAiA Gnome and PAiA Vocoder

“This auction is for a vintage PAIA Gnome touch ribbon synthesizer and a rack mount PAIA 6710 Vocoder with attached power supply along with the respective manuals and schematics.

These items are being sold as is. I know they worked at one time but have been in a box for many years and therefore are being sold as is. Please note the two inputs on the right of the vocoder need to reattached.”
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PAiA Vocoder 6710 Project Machine

“Up for sale is a Paia Vocoder 6710. A very rare vocoder kit. Assembled by Cynthia Instruments. Appears fully assembled, but condition is unknown because I dont have any way to test it, though there appear to be wires for hooking it to a power supply. Also selling a PAiA Quadrafuzz in a separate auction. Potential bidders should check photos and see that everything is to there liking. Because of the nature of the sale, I will not be able to accept returns, and condition is for Parts/ As is.”
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