MATRIXSYNTH

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This post hosts all Featured listings that have dropped off the top of the site. Many of these listings will obviously end in time. They will remain here as a record of what went up over time. You can click on them to see what items went for as long as they remain on eBay. You can find the most current month by clicking on the "more..." link just below right of the icons above. This list only hosts some of the more interesting and unique items that have gone up over time, so be sure to check out the Auctions label for everything else. You can also search for any synth with auction in the search box on the top left of the site. If you click through the auction links you can see what items went for. You can also search by serial numbers to track the history of specific synths.

June 2013 (click here for newer listings):

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Allemande - J. S. Bach on Sequential Circuits Prophet-10

Published on Sep 28, 2012 by maisonvague

"Performance of the "Allemande" from French Suite No. 1 by J. S. Bach on the Sequential Circuits Prophet-10 analog synthesizer. Additional equipment used: Moog MF-103 Phaser, Moog MF-104z analog delay, Moog CP-251, Electro-Harmonix "Cathedral" reverb, Zoom H1 recorder."

KAWAI K3 Digital Synth with SSM Filters

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via this auction

"It has 32 waveforms some of which are acoustic instruments like piano and percussion as well as other unique waveforms. By combining two of these waveforms you can create new sounds or add a twist to traditional sounds.Whats really neat about the K3 is that it has analog filters and envelopes so it sound might be digital at first but gets warmed going through the filter. The low pass resonant filter has it's own envelope generator, there's also a high pass filter and highly flexible LFO. The K3 nicely bridges the gap between analog and digital domain synth's."

Cyndustries FOUR TRANSIENTS in FRAC BLACET

via this auction

You can find details on the Four Transients here.

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Buchla / Verbos Dual Oscillator Model 258v

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via this auction

"Two independent voltage-controlled oscillators, continuously tunable from 5 Hz to 20 kHz. Each has two processing inputs and a frequency modulation input. Waveshapes as well as frequency can be voltage controlled. Model 258 oscillators feature low sine wave harmonic content, negligible settling error, and high short and long-term stability, even with rapidly changing ambient temperatures.

Processing inputs:
Processing control inputs permit multiple control of pitch without need of separate external processor.
Grey one is 1.2v/oct pitch input.

Processing controls:
Used to set desired range of frequency control. Expansion, compression, and inversion of scales are accomplished here.

Frequency modulation control:
For adjusting vibrato depth or creating clangorous or bell-like tones, rich in non-harmonic partials.

Output:
Signal amplitude is +4 dB. Output impedance is 600 ohms.

Oscillator frequency control:
Spans the audio spectrum of 5 Hz to 20 kHz with no range switching. (Applied control voltages can extend limits to .1 Hz and 30 kHz.)

Waveshape control input:
Waveshapes can be varied from sine to saw (osc 1) and sine to square (osc 2). Voltage control of waveshape enables powerful dynamic control of timbre."