MATRIXSYNTH

Roland SH-101 analog monophonic synthesizer

via this auction

"Roland Sh-101 in 100% working condition. Cosmetically in near mint condition. This sh-101 has been fully serviced with all electrolytic capacitors replaced, all op-amps and various other IC's replaced. All replaced components are of the highest quality and same specs as the originals.

Its a classic popular mono synth for a reason - it sounds great and its easy and fun to play. The ability to mix in the sub oscillator at 1 or 2 octaves below makes this a killer bass line maker. Add in the 100 note sequencer and arpeggiator and you can see why this has become a classic synthesizer. Runs on batteries or standard 9v adapter"

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Rare ROLAND SYSTEM 100M 131

via this auction

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"Working System 100M module 131 Four Channel stereo output mixer (very rare)
Includes fixed frequency reference oscillator at three test tone frequencies
Four input channels with left/right pan for each channel
Master volume control
Stereo output
Separate headphone output with level control
Owned and used by a non-smoker
Free shipping in the USA, $45 to elsewhere"

ROLAND SYSTEM 100M DSET 130

via this auction
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"Working System 100M module 130 Dual Voltage Controlled Amplifier
Component of the D-SET (112, 121, 130, 140 and 150)
Two independent Voltage Controlled Amplifers (VCA)s
Two initial gain
Linear or exponential setting
3 signal inputs per amplifier
3 CV inputs per amplifer
2 outputs per amplifer (high and low level)
green and red LED to show signal level and overdrive
Owned and used by a non-smoker
Free shipping in the USA, $45 to elsewhere"

circuit bent ZEN THESIZER analog synth harp

YouTube Uploaded by SuperRoss007 on Aug 3, 2011

via this auction

"dementia labs experimental harp zither hammered freaky thing....has dice sound knobs..1/4 in guitar cable output jack..patch bay that changes lfo rate and tone ..closes up in its own lil suitcase ..travel ready..scope out the trippy video to see how this sounds internatonal buyers welcome..."

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The Kitten Vintage Synthesizer by Octave - Model 1214

via this auction

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Modded SEQUENTIAL CIRCUITS SIX-TRAK for Parts

via this auction

"This SEQUENTIAL CIRCUITS SIX-TRAK has the RARE 6 voice AUDIO MODIFICATION ( each voice has an individual output like the SCI MULTI-TRAK ) But he [previous seller] claimed the synth had it's battery replaced so no sound programs were inside so no sound could be produced & I should just purchase the DIAGNOSTIC ROM from winecountrysequential.com & all would be fixed. I talked to them & they said "no, it's most likely the audio, the ROM may not just fix the problem" I sent tons of sysex dumps trying to load banks into the synth-nothing. So if you need PARTS for a SIX-TRAK-here you go!"

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Tension

Tension from Matti Niinimäki on Vimeo.

"A brief video showing Tension. An interactive spatial sound installation for multiple users.

A person enters the space and a generative sound is assigned to that person. The sound pans around in the 6-channel speaker system following the user in the space.

Up to 5 users can use the installation at the same time. Each person modifies the other sounds based on the distance to the other users. The closer you are to other people the more the tension in the sound increases."

Nord Lead 3

flickr set By svepedo
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Flame Controlled Synthesizer Lowpass Filter by Nyle Steiner

YouTube Uploaded by nylesteiner on Aug 3, 2011

"See more interesting stuff t sparkbangbuzz.com

This lowpass filter is just like a normal synthesizer lowpass VCF but the cutoff frequency is controlled by the variable resistance of copper oxide when heated by a flame

I built the filter this way just to see how good it would sound when controlled with a flame and copper oxide resistors. The copper oxide resistors are just pieces of ordinary copper wire that had been previously oxidized in a propane flame.

The resonance is difficult to control precisely because of unequal heating and cooling of the two oxidized copper wires.

Another way of doing the same thing would be to just use one flame controlled copper oxide resistance to vary a dc voltage into the VC input of a normal VCF."