1980s Yamaha RX5 & RX7 Digital Rhythm Programmer Drum Machines

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Note the sliders on the RX5. Also note the crack on the back.

RX-5 SN 8175
"1980s Yamaha RX-5 drum machine, classic sounds and fantastic sequencer! Features individual outputs and an on-board mixer section. Shows average wear, super clean overall. *Top left part of the enclosure is partially cracked, fully functional otherwise! (see last photo) Includes power supply."

RX-7 SN NZ01825
"1980s Yamaha RX7 drum machine, includes power supply. Tested in great condition, shows minor scrapes and scratches."

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Black Corporation XERXES MK2 SN 154

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"Excellent used condition, includes original packaging, power supply and rack ear kit.

XERXES delivers an unmatchable level of warmth through its two digitally controlled analog oscillators. A multimode analog filter, white and pink noise generator, 2 ADSR envelopes, 2 sync-able LFOs, unique analog BBD chorus with 3 modes, full MPE-based polyphonic aftertouch, and complete MIDI control including polyphonic aftertouch and MPE work together to bring a classic analog sound ready to integrate into modern times. MK2 features an updated VCA section, and balanced outputs.

Xerxes produces triangle, saw, square, and PWM waveforms with variable drift controls from each oscillator, sync with variable phase shifting, and ring modulation allowing for complex cross-modulation effects. Each oscillator features an octave switch, bipolar transpose potentiometer +/-7 semitones, a master tuning pot affecting both oscillators, and a detune knob for subtly detuning Oscillator 2 to Oscillator 1. Portamento/Glissando or Glide can be programmed to affect Oscillator 1, 2, or both.

The analog multimode filter on XERXES offers 24db/oct low pass, 12db/oct high pass modes and a band pass filter mode switchable between 6db/oct & 12db/oct for all kinds of filter characteristics. The filter can also be modulated by the dedicated ADSR envelope, LFO, velocity, and aftertouch (MPE and Polyphonic Aftertouch) allowing for incredibly expressive performance and programming.

XERXES features 6 LFO waveforms: Sine, triangle, saw, ramp, square, and random, plus a dedicated delay control to fade the LFO to the full amount set by the depth knob. Two LFOs are selectable with an A/B switch, each of which can be used to control multiple parameters set by the button switches to control oscillator tuning (A/B/Both) filter cutoff, and amplifier levels (VCF/VCA/Both.) Each of these LFOs also includes a Sync on/off switch.

XERXES features a beautiful, fully-analogue BBD-based chorus with 3 selectable modes, similar to the chorus effect found on the vintage Elka Synthex synthesizer. XERXES MK2 is equipped with stereo 1/4” balanced outputs to take full advantage of the stereo chorusing effect.

Finally, XERXES features full MIDI control and ability to store 128 user presets per bank across 11 banks (Factory, Vintage and 9 user banks) integrating this classic synth concept seamlessly into any studio setup."

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Refurbished and Modified Oberheim Matrix-12 w/ Original Manual & Operation Guide

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I can't tell if the SN is P55010, P55020, or other.

"As rare as these are, it is far rarer to find one in absolute mint condition, fully restored, modified with an internal fan (to mitigate the notorious overheating issue with these), extra CEM chips, original 194 page owners manual in great condition AND the original and rare 12 page GBC bound quick start guide! I'm in absolutley no hurry to sell this one. It's just a window display for the shop really, unless someone wants the cleanest, best one money can buy. When I say the wooden sides look brand new and don’t have a single scratch, I mean this one belongs in a museum. All the buttons were cleaned and serviced by a professional, some minor components like aged capacitors have been upgraded to highest quality versions and the unit has always been stored in a climate controlled, smoke free home studio by all three owners.

When it was released, retail price was equivalent to today’s retail value of over $18,000. Can you imagine buying it new for that in the 80’s? No wonder so few were made (from 1985-1991 only 1,000 were produced).

I am the third owner. I don’t need to tell you that this is quite possibly the greatest synthesizer ever made. It is arguably the greatest Oberheim ever made as well. With 15 LFO’s and VCA’s per voice, this thing is an absolute beast. It even has a self tuning feature that recalibrates itself."

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Korg Mono/Poly SN 374139

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Access Waldorf Microwave Controller

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"Access controller for original waldorf microwaves. Works perfectly and in excellent shape. Missing one knob cap but all encoders are in excellent condition and fully functional. Sale includes 9v power supply"

Midibox SammichSID

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"Midibox SammichSID purchased pre-built (brand new) in 2017-2018."

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Elektron Monomachine SFX-60 + MKII w/ Decksaver Lid

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"It is known for it's unique sonic character, can basically do anything, drums, pads, stabs, noises, glitches. Has been used with a lot of care and only in a professional recording studio setting. I just don't have the use for it anymore unfortunately. Next to it's unique character in sculpting various sounds and bleeps and noises and it's very own sonic aesthetic (used by artists like Actress, Tom Yorke, Autechre, Sophie, Chemical Brothers to name a few), it's programming possibilities, usability in digital and analogue setups are endless."

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AtomoSynth TT mini System, 8 voice analog percussion synth

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"This mini eurorack system consist of: 2 Tottem module, metal case with internal power regulator, external DC power adaptor

Please note, to play this instrument it is necessary a sequencer with 8 gate outputs. for example: beat step pro, key step pro, Korg sq64 etc.

Tottem specs
Four analog percussion synthesizer voices.
Two voices feature, one oscillator, two decay envelopes, one LFO, and a noise generator.
Two voices feature, one square wave and metal oscillator, one noise generator, one mixer, and a decay envelope.
Individual manual gate buttons.
Output mixer.
Individual outputs for each voice.
Master mix output.
Manual gate button for each voice.
Current draw: 197mA +12V. 75mA -12V. 0mA +5V.
24HP wide.
25mm deep."

AtomoSynth TK mini System, Four voice percussion synth + analog synth voice

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You can find demos in previous posts here.

"This mini eurorack system consist of: 1 Tottem module, 1 Koe Vactrol module, metal case with internal power regulator, external DC power adaptor

Please note, to play this instrument it is necessary a sequencer with 1v/oct CV/gate output and 4 gate outputs. for example: beat step pro, key step pro, Korg sq64 etc.

Tottem specs
Four analog percussion synthesizer voices.
Two voices feature, one oscillator, two decay envelopes, one LFO, and a noise generator.
Two voices feature, one square wave and metal oscillator, one noise generator, one mixer, and a decay envelope.
Individual manual gate buttons.
Output mixer.
Individual outputs for each voice.
Master mix output.
Manual gate button for each voice.
Current draw: 197mA +12V. 75mA -12V. 0mA +5V.
24HP wide.
25mm deep.

KOE Vactrol specs
One voltage-controlled oscillator VCO, with Triangle, Pulse, and Saw waveforms.
Folding effect control knob for the triangle waveform and pulse width, for the pulse waveform, also controllable by CV.
Square wave sub-oscillator with 1, 2, or 3 octaves below the main oscillator.
Tune and Fine Tune knobs for the main oscillator.
Glide effect knob.
12dB/oct Vactrol-based filter with low pass and high pass independent inputs. (KOE Vactrol version only).
24dB/oct Low Pass ladder filter (KOE Ladder version only).
One ADSR-type envelope generator.
Current draw: 55mA +12V. 16mA -12V. 0mA +5V.
24HP wide.
25mm deep."

Vermona M.A.R.S. + Control Analog Rack Synth SN D02004 & D01915

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I thought the price was a bit too good at only $689.00 for this one, but it's disfunctional. This one is for the techs/DIYers out there.

"FUNCTIONING WITH DEFECTS

This is a very rare example of the Vermona MARS synthesizer and Control unit.

The Control unit is responding as it should with the head unit, and all menus and buttons seem to also be working on the head unit.

Known issues:

Head unit produces sound and is affected by keyboard presses, but for some reason the LFO keeps running and cannot be turned off, also the Filter and Envelope Generator are not responding (even though the Control unit changes their parameters)

This could be a great project for someone looking to repair and get a great deal on this very rare synth, or get the head unit for parts and a fully functioning Control Unit."

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