MATRIXSYNTH

via this auction

"HERE THE DESCRIPTIONS FROM PETER FORREST BOOK "VINTAGE SYNTH'S A-Z": Elektronika EM-04 - 49-note (C-C) split multi-keyboard. This seems to have appeared in two very different forms. Both have sets of sliders to the left of the keyboard and in three sections behind it; but one is a neater, flatter machine with a carrying handle at the forot, while the other has fold-down legs, a little Farfisa-like, and a reverse-colour keyboard for the bottom two octaves. Divide-down tone generation; 'slalom' effect. Size: 790 x 490 x 155 mm. Weight: 18kg."

"EM-04 HAS A FOUR MAIN SECTIONS OF CONTROL:
1-st GROUP (left manual) - attack, sustain, bass, violin, alto, string, orchestral, brass
BRASS FILTER - attack, sustain (level, on/off), cutoff, resonance
2-nd GROUP (right manual) - attack, sustain, bass, violin, alto, string, orchestral, brass
MASTER - fine tuning, main volume level, tone (brightness), slalom (pitch slide), gavai (finger pitch controller), string/organ select, brass 1-2.

CONNECTIONS - output 5-din, pedal input 5-din, power socket, fuse, power on/off switcher."

samples at the auction via ruskeys.net

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Sequential Circuits Prophet-5 Rev 2

via this auction

Note the tape record toggle switch.

Roland MRS-2 ProMars Compuphonic Analog Synth

via this auction

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Roland SH-09

via this auction

EMS SYNTHI A Modular

via this auciton

I swore I put this one up already, but I can't find it, so here it goes again. There's even a Synth Babe poster in the background for you below.

"EMS Synthi A modular synthesizer. If there was ever a turnkey example of a Synthi A, this is the one. Turn it on, and everything is there, including the following mods...

1) oscillator 2 sync with osc1/osc3 or off
2) oscillator 3 sync with osc1/osc2 or off
3) oscillator 3 frequency hi/low switch
4) sync depth (Threshold) Pot/control
5) vcw2 (not sure about this)
6) Envelope Invert jumper/pin
7) gate input (was ch2 Control Signal In)"

Oberheim Matrix-6R

via this auction

"Oberheim Matrix 6R Analog Synth, this unit is in perfect working order and clean, home studio use only, the s/n # is k620162

if you need to reset the unit you do it like this:

To reset everything hold down STORE, power off/power on while holding it down. Release store, display goes blank, display resets and displays 00."

Musikmesse: New Items at the Superbooth

In case you didn't click through earlier.
via SchnedersBuero:

Tisch 1:
Doepfer / D-München www.doepfer.de
NEW: matrixmixer, dsp-fx, quad midiconverter, etc

Tisch 2:
Manikin electronic / D-Berlin www.manikin-electronic.com
NEW: Vintage3, Prototype X
The Harvestman / USA www.theharvestman.org
NEW: Stilton adapter, Evin 209
Make Noise / USA www.makenoisemusic.com
NEW: Quad MultiMode Gate, WOGGLEBUG
Tiptop Audio / USA www.tiptopaudio.com
Bubblesound / USA www.bubblesound-instruments.com
NEW: SEM20 VSF
Cwejman / SE www.cwejman.net

Tisch 3:
MFB / D-Berlin www.mfberlin.de
NEW: 522, Modul Drum 07 + X
Studio electronics / USA www.studioelectronics.com
Future Retro / USA www.future-retro.com NEW: ORB
SND / D-München www.s-n-d.com

Tisch 4:
Sherman / Belgium www.sherman.be NEW: Restyler DJ tool
Schippmann / D-Berlin www.schippmann-musik.de

Tisch 5:
L.L.Electronics / D-Kaiserslautern www.rozzbox.de
NEW: Rozzbox V2
EOWave / France www.eowave.com

Tisch 6:
JoMoX / D-Berlin www.jomox.de NEW: M-Base11
Moonmodular / D-Berlin www.lunar-experience.com NEW:
big modular trigger sequencer, quad quantizer, reversible mixer, etc..
Curetronic / D-Dresden www.curetronic.com
NEW: Midi-interface, 3HE modul adapter
Metasonix / USA www.metasonix.com
NEW: Assblaster KV100, R-51, R-52 and 53 prototypes
Flower electronics / USA www.flowerelectronics.com

Creamware-Prodyssey-14

flickr by radar23
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full size

random voltage

via Johan: "Here is a photo from an installation i made recently at Fylkingen in Stockholm"

random voltage

"A true modular synthesizer is a synthesizer where the different sound generators, processors and control facilities are presented as independent objects without preconceived signal and/or control paths inbetween. The musician/composer chooses the combination of modules and connects them according to the musical idea, essentially creating a new instrument for each "patch".

This was the way all synthesizers were designed in the beginning. Soon some manufacturers discovered that it was more commercially successful to pre-package the synthesizer in a certain way, locking it into a single patch with just a few choices available to the musician and attaching a piano keyboard to the circuit. The word "synthesizer" quickly became synonymous with this design, often even called "keyboard" and used almost exclusively by pianists. Most people out there are not even aware of the modular synthesizer design. In the process of commercializing the synthesizer its abstract sound world had to be mainstreamed by letting it imitate acoustic instruments - strings, brass etc. Synthesizer quality was measured in terms of how realistic its sounds were.

The synthesizer is so much more."

From the Modular Synthesizers section Be sure to see random voltage for more including audio.

Update via the comments: the modules are from the Buchla 200 series.