KORG MS20 Phone Conversation

via h. You can find the mp3 here.

EXTRAPOLE - Multimode for LP4P VCFs

"The project proposed here is an extension board to add 15 functions to the MOTM 440 VCF and more generaly to almost all 4 poles Low Pass VCFs with a similar topology ...

The idea of this extension come directly from the Oberheim Xpander/Matrix12 multi-function VCF schematic : the 4 poles of a classic low pass filter are mixed together with different coefficients to get multiple functions. The Multi-function VCF page contain math explanations and a copy of the original schematic, so i won't reproduce them here, just the list of the 16 VCFs functions as a reminder..."

click here for more info on Papareil Synth Labs. via Not Even Remotely Funny in the comments of this post.

KORG PSS-50 Programmable Super Section

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"Per literature, this has 48 built-in backing patterns including 4, 8, and 16-beat, as well as fusion, reggae, disco, ballad and many more. Is run by internal batteries or external AC power supply"

Update via ghost arcade in the comments: "god i love this machine. we used it on a track called mr. bossa suicide (with a lot of fx and other synths) but if you wanna hear it check - this link although this is a live version from 2001.. "

1974 MOOG Minimoog

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KORG MS10 with MIDI

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"unlike most others this one includes MIDI. The MIDI interface is internal to the unit. It is a synhouse.com MIDI Jack II which allows for instant operation of the synth without needing time to warm-up."

KORG MS20

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Akai AX-80

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"specifications:
Polyphony - 8 voices
Oscillators - 2 per voice + Sub Osc. (sawtooth or variable pulse width)
Filter - 8 VCFs (1 per voice)
VCA - 8 ADSRs (1 per voice)
LFO - 3 LFOs controlling OSC 1, OSC 2, VCF
Keyboard - 61 keys (velocity sensitive)
Memory - 96 patches (64 user, 32 preset)
Control - MIDI
Date Produced - 1984"

Braintec Transistorbass 3 Analog Synthesizer

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"This machine emulates everyone's favorite silver box admirably, but it also has many other facilities to way beyond into new sonic territories. It adds a second sawtooth oscillator that can be synced to VCO 1 and modulated by the envelope or LFO. That's right, I said LFO because this unit has two of them that are hidden but accessed easily via program change. Just when you think you have the ultimate funky bassline, you can modulate the filter by a midi syced LFO to take it to the next level. Also featured are a filter input and CV/Gate out to control your older, MIDI-less equipment. All in all, a unique sounding machine that will be at home in any acid studio setup. Supposedly, there were only 400 units made so it might be considered to be quite collectible if you care about those things."

POLIVOKS

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Note how the sections are raised and separated.

"Synth has two oscillators with triangle, saw, and three square waveforms with different pulse width. You can choose from 32’ to 2’ register for every oscillator. You can modulate the first oscillator by the second(crossmodulation). There is portamento effect for the first oscillator. Polivoks is duo-phonic synth it means that you can play two notes at the same time. The heart of the Polivoks is originally designed 24db dualmode filter, well known by its killer resonanse, unique and unstable sound. Filter can be switched in LP or BP mode. There is LFO with 4 waveforms, it can modulate every VCO, VCF and VCA. Mixer section consists of 1osc, 2osc, noise and external signal.There are dedicated ADSR envelopes for VCF and VCA.Envelopes has autotrigger mode when signal repeats from attack to decay stage." samples at the auction.

JKJ CV-5 midi to CV converter

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"This is a great midi to control voltage converter that allows analog synthesizers and other modular devices to be controlled by a midi keyboard, rhythm machine, or sequencer. The CV-5 works with any monphonic analog synthesizers which conform to the 1 Volt per octave or Hertz per Volt scale standards. The unit can be confiigured by sending midi program changes. The CV-6 goes well beyond most simple midi-to-CV converters and offers high quality portamento, fast note response times, filter and auxiliary outputs, dynamic audio processing (volume and pan control), syncable LFO, vibrato, sample and hold, pitch bend, and DIN sync output. With five CV outs, it can actually be used to control two synthesizers."

Update: be sure to check out the comments of this post for more info.