MATRIXSYNTH

via this auction

"Voyetra 8 (Serial number GM 4812)... I'm not sure what Rev. it is but it has green voice cards and MIDI (a custom cable is included - XLR to MIDI - see pics)."

Pic of the inside below.

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Linndrum with Side Handles, Original Box & Tapes

via this auction

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Oberheim DSX Polyphonic Sequencer

via this auction

"The DSX can interface directly with other Oberheim synths as well, including the OB-Xa, OB-SX, and OB-X. The DSX can synchronize to the DMX, or it can control the OB-synths. In addition to controlling these synths, the DSX features 8 CV and Gate outputs to control up to 8 more other analog synthesizers..."

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SHIN EI - 4 IN THE FLOOR - Funky 60's Analog Drum Synth

via this auction

"extremely rare, late 60's, Japanese, Shin Ei Companion drum synth (by the same makers of the Uni-Vibe)."

This is the one recently featured in this video by Chamber of Sounds.

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1929 RCA Theremin AR-1264

via this auction
via the seller's description:
"It was missing its doors and antennae when it came to me, the and exterior was in poor shape, there was a large gash across its front, and the beading was damaged.

The doors have now been replaced(one of the doors is an original from another RCA theremin), replacement antennae have been faithfully copied by a remarkable craftsman and theremin enthusiast, (they need to be nickel plated), and the cabinet has been refinished on its exterior. The interior has been left as found, in good shape. The legs are original and intact as found.The beading has been replaced.

In the photos can be seen the replacement antennae compared to original ones, the theremin for sale compared to one with an original finish( the original is darker than others I've seen),the number "502" stamped on the bottom of the door. The left cabinet door is slightly warped out at the bottom.The speaker power receptacle needs a replacement cover, its base is intact.There is clear plastic wrapped around the pitch and volume coils to protect the wire.

Something remarkable about this theremin is when I first assembled it and slowly warmed it up , it was functioning absolutely fine , I didn"t even have to fiddle with the tuning capacitors. As it is now, I haven't warmed it up in years,and it will be sold as is,with all the original electronics intact. The next owner will have to use their care skill and patience to maintain this rare ,80+ year old electronic music artifact. If you are unaware of the instrument or its history there are tons of sources availabe on the internet,the movie "Theremin, An Electronic Odyssey" and A. Glinskys book "Theremin, Ether Music and Espionage"are excellent resources.Other leads for info are looking under the subjects; Clara Rockmore, Lucie Bigelow Rosen, Lev Termen, Robert Moog, Samuel Hoffman.

If the buyer is able to pick up the theremin, I will throw in (gently) an RCA 106 speaker, If it is to be shipped I'll include an RCA 100 speaker."

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Flame Clockwork euro rack module

via this auction
See the seller's other items for more.
"specifications:
analog clock + cv-outputs
3 channels with beat-, gate-, shift / cv-control
beats included triplet and punctuated notes
clock shift forward and backward
lfo (synchronized), 4 waveforms: saw, up, down, up-saw-down
shuffle control (8 or 16th parts)
integrated midi to cv interface (5 octaves, 1v/oct operation)
midi-sync (internal/external tempo via midi-clock)
complex random functions
record functions
midi-controller

outputs 3,5mm mono jacks (1/8th inch): gate, cv + sum, clock/gate, midi-
cv/gate, sum cv, 16th clock
cv voltage: 0..5v
clock voltage: 0..5v
midi input / output
euro rack format size: 3 HU, 28 HP"