Yamaha FS1R Formant Shaping FM Synthesizer

via this auction. If you are considering an FS1R be sure to get the free editor in the update to this post.

"For an in depth look see this review"

And of course search for FS1R here on MATRIXSYNTH for more including videos.

PPG WAVE 2.3 Analog/Digital Wave Synthesizer

via this auction

KORG DELTA ANALOG SYNTHESIZER

via this auction. Note this is the one featured in this video posted earlier.
"INTRODUCTION
- Fully polyphonic. Uses divider circuitry similar to organs to accomplish this.
- A synthesizer AND string ensemble in one!
- Selectable Lowpass/Bandpass resonant filter
- Synthesizer section has 4 octaves PLUS noise that can be mixed-in simultaneously using faders.
- Separate outputs for high and low output, separate synthesizer and string outputs, and a headphone output.
- Joystick with selectable pitch-bend and filter vibrato effects.
- Equalizer for boosting/cutting high and low frequencies."

Fender Chroma Polaris Synthesizer

via this auction

Octave The CAT -Mono / Duophonic Analog Synthesizer

via this auction

"Specifications
* Polyphony - Mono/Duo-phonic
* Oscillators - 2 VCO's (2 sawtooth, 2 square wave, and 1 triangle) plus 2 sub-oscillators
* LFO - 1 with sample-and-hold
* Filter - 1
* VCA - 1 VCA, 2 EGs- AR and ASDR
* Keyboard - 37 keys
* Memory - None
* Date Produced - 1976"

Circuit bent Emu Drumulator

YouTube via stylinghead

m12-synthex2

flickr by ostrovitch
(click for more)

Oberheim Matrix-12
Elka Synthex

Circuit bent Yamaha QY-10 qy 10

YouTube via stylinghead. via the forum where it is listed for sale.

flickr by stylinghead

Korg Delta

YouTube via thegarranimal
"This is a quick demo of the Korg Delta from the late 70's featuring BOTH a synthesizer section and a string ensemble section. Just showing the functions are in working order, no noisy pots or sliders, and the kinds of interesting old analog sounds this machine can make."

Korg DW-8000 quick sound demo

YouTube via thegarranimal
"This is the Korg DW-8000 analog/digital hybrid synthesizer up for sale on Ebay. Just a quick demo showing the kinds of sounds it can make. It can sound like a Memorymoog, Juno-106, Oberheim....all kinds of things. It can also make all sorts of weird digital sounds but I didn't create any patches of those."