MATRIXSYNTH

Roland D-550 w/ Plus RAM Card & Rescue Disk

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Rack-mount version of the exceptional and legendary Roland D-50

"The included Roland D-50 Rescue kit (which also works for the D-550) will also allow you to restore the system settings via MIDI. A printed version of the manual is included; there is no original box. To this day the synth remains popular for its unique and powerful sounds. You will find it is still fully supported (on eBay you can find upgrades for the display and other accessories; the internal battery used is a very common and inexpensive CR2032.
Features:

16 voice polyphony (32 partials with 2 per voice), or 8 voices (using 4 partials per voice in Dual or Split Mode)
Oscillators: Digital (Linear Arithmetic Synthesis) ; PCM,
LFO : (3 x 2 tones = 6 LFOs)
VCF/VCA FILTER: low-pass-resonant; ADSR envelopes
61 note keyboard with velocity and aftertouch
64 patch memory"

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ELEKTRONIKA EM-26 w/ Teal Side Panels SN 029 30

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via this auction

"Elektronika EM-26 portable vocoder is intended for synthesis the voice or external signals, has internal strings ton-generator, analyzer-synthesizer, modulations and vocoder effects. Control panel include 4 sections: VIBRATO, VOCODER, STRINGS and LEVEL, also it has a panel real time transpose and other controls.

VIBRATO section has sliders - accent, depth and rate VOCODER - chorus knobs (on, mode), mic/vocoder level STRINGS - on/off, level, violin/cello, sustain LEVEL - mic, line A, line C Keyboard PANEL: main level, pitch, interval, octave, pitch bend

CONNECTION (1/4 jack): mic in, line A,C, phones, output, pedal, power."

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Alesis Air Synth AND Air FX w/ Manuals & Patch Charts

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video by John Schussler

"Bringing out a couple units I haven't touched in 20 years from the attic to remember what they sound like.

No narration or commentary, just me waving my hands around and listening to the funny sounds that come out. Probably more of a record for posterity than anything else...."

via this auction

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Access Virus TI2 Dark Star w/ Paint Damage

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via this auction

Interesting that there's white under the paint.

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Roland JD-800 Metal Frame Casing

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via this auction

SN AD13177

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Casio SK-1 & Delay Bot

video by Moon Armada

And:

The Baby Bot 306 Rhythmic Noise/ Drone/ Fx Synth

moonarmada.com

Lego Synthesizer No. 1- The Photon Blaster

video by Moon Armada

"The Photon Blaster: a rhythmic-noise generator that is played by shining strobing LED's into and away from a pair of light-sensors.

Each LED has controls for the speed and shape of the strobe. The LED's and sensors can be moved around to control the response.There is also a pair of CV inputs for controlling the LED's externally.

There are also additional controls for changing timbral and rhythmic aspects of the sounds.

The entire enclosure and and controls (including buttons and knobs) are constructed from Lego bricks.

moonarmada.com"