MATRIXSYNTH: Auctions


Showing posts with label Auctions. Show all posts
Showing posts with label Auctions. Show all posts

Friday, April 19, 2024

National SY-50 Automatic Rhythm Vintage Analog Drum Machine SN 483028

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via this listing

You can find a couple of demos of the SY-50 in previous posts here.

Moog Slim Phatty Desktop Analog Synthesizer

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via this auction

Additional Perfect Circuit listings

Roland VariOS Open System Synthesizer Module

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via this listing

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Access Virus TI2 Desktop Virtual Analog Synthesizer

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via this listing

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Korg M1 Music Workstation w/ Three Wave Music Gig Bag

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via this listing

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"The Korg M1 Music Workstation in excellent condition.

The backup battery has been replaced recently and loaded factory patches."

Roland Jupiter-8 W/ Midi

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via this listing

"Roland Jupiter 8 in good condition. The face of the unit has a few marks as well as 1 hole plug and another hole plug on the right end cheek. The unit otherwise is in pretty great shape and his been restored comprehensively inside. It features Encore midi, the best midi available for the Jupiter 8 in our opinion."

Oberheim OB-X 61-Key 8-Voice Synthesizer SN 802701 w/ MIDI & Custom Side Panels

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via this listing

This SN was previously posted here with custom knobs back in 2019.

"OBERHEIM OBX 8 VOICE s/n 802701 , Encore MIDI 120 programs, custom cherry wood cheeks, flight case. Production 1979/1980. The first and the best Oberheim polysynth.
FUNCTIONALITY
This synth has been fully restored by Rosensound, one of the best in the business.Vintage Oberheim synths have a reputation for being inherently unreliable, which is not really accurate. The electrical design flaws and common stress/failure points on these synths are well known. Provided they are properly restored and upgraded by a competent technician they are quite reliable. I've had this one since 2021. It's given me no trouble. It tunes and scales so accurately that sometimes it's quite nice to play before hitting autotune. All key bushings are new of course, so it's nice to play.
All functions working as normal. If you own one of these, expect to periodically open it up to clean J-wires on the old pratt-read keyboard. This is not technically difficult and there are resources available on the internet. Nothing this old will run without periodic maintenance.
COSMETICSSee photos. I have tried to show every unflattering mark on the front panel, there aren't many but the buyer should be able to see what they're getting. Bottom panel has light paint scratches consistent with a 1979 synth, but no metal gouges or whacks.Overall I think the front panel is clean, very nice IMO.

By the way, I have the original cheeks which burst at the side (a common issue as they used cheap plywood with a solid wood veneer) - they're not hideous by any means, I just prefer the cherry ones. If the buyer wants the original cheeks I can include them too, but be aware they'll not fit in the case, so separate shipping costs will be incurre"

Sequential Circuits Split-Eight SN 02917 w/ Custom White Side Panels

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via this listing

"Relatively uncommon but a fantastic sounding analogue synth capable of some extremely rich sounds when compared to modern digital offerings.

This unit is completely restored and fully operational.

This unit has seen the following service:

Completely refurbished keybed
All button contacts (Keybed and front panel buttons) have been refurbished
ALL electrolytic caps replaced including those on the audio board.
New memory battery installed
New voltage regulators installed
New led matrix chips installed
Full factory sysex installation with original factory sounds restored.
Fully tested and working great!
The Split-8 makes for a very nice programmable polyphonic analog synthesizer with complete MIDI implementation. With 8 voices and 8 oscillators (Curtis 3394 SENTE chips) the Split-8 is a heavy contender against the Roland Juno-106.

The keyboard features splits and layers, all of which can be saved with patch data. Choose between 8 voice polyphony with 1 oscillator per voice, 4 voice polyphony with dual oscillators per voice, 2 voice polyphony with a mega 4 oscillators per voice, or the unison mode which is just a fat 8-voice solo mode for trance bass and lead heaven! Similar to the Juno-106, the Split-8 uses a Chorus effect to liven up the sounds.

Split-8 features:

One voltage-controlled oscillator (VCO) for each of the eight voices. Switches are used to set any combination of triangular, sawtooth and square wave. Pulse width modulation (PWM) is available.
For each voice, the coarse tuning is available within four octaves as well as the fine tuning.
Programmable "poly mod" allows the audio output of one voice to feed another's VCF. In this case, the polyphony is reduced to four voices.
The voltage-controlled low-pass filter (LP VCF) has a four-stage structure with a slope of 24 dB per octave. Cutoff, resonance and modulation depth adjustments are available. A keyboard tracking mode is also provided (higher notes have a higher cutoff frequency).
The low-frequency oscillator (LFO) produces a triangular or rectangular waveform in the range from 0.25 to 20 Hz. It can be used to modulate the cutoff frequency of VCF, the pitch of the VCO and the pulse-width modulation.
ADSR envelope generators for VCF and VCA.
Keyboard "split" and "layer" functions are available.
Programmable chorus effect.
Full MIDI support, including downloading presets via the sysex protocol."

Thursday, April 18, 2024

1970’s Oberheim TVS-1A 2 Voice Synthesizer SN 0087

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via this listing

Casio VZ-10M Digital Rackmount Synthesizer w/ Original Box & Accessories SN 002598

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via this listing

"Casio VZ-10M Digital Rackmount Synthesizer in Box+Casio Sound library Patch Card"

Roland V-Synth XT Rackmount Digital Synthesizer SN ZU92872

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via this listing

Additional Perfect Circuit listings

Roland Juno 106

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video upload by ohm_studi_ohm

"First part I demo a few presets and most of the controls.
On the second part I enter test mode and let you listen to the 6 voices filter calibration.
This is a good test to check if your Juno 106 needs calibration. Most of the calibration procedure is dedicated to the filter setting, since oscillators are DCO they won't drift, but the filters can. By entering test mode and selecting bank 3 you basically recall a patch that has filter in self oscillation with keyboard tracking, thus you can easily hear if any of the 6 voices is off. Just play notes in the high and low notes and listen to the pitch (and amplitude). The 6 voices should sound the same, like on this unit. If one or more is way off it's time for calibration."



via this listing

Wednesday, April 17, 2024

Roland Juno-106 Synth Spa Arctic White Edition w/ Synth Spa Chips

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via this listing, also on eBay

"This classic Juno 106 is in great cosmetic and operational condition. ALL voice / filter chips are working proper without any issues. Synth Spa professionally replaced / installed and calibrated this synth.

This synth was always taken care of. Battery Voltage was checked and in spec, power supply checked and in spec. It was also fully calibrated. It is ready for years and decades of use.. ready for any synth lover's rig. We are pricing it pretty low considering it has the complete voice chip upgrade. And as you can see from the pics.. it looks amazing as well.. very well kept! Only thing to note is a couple of buttons take a slightly harder press to engage than others. Did not bother me at all.. just stating for full disclosure : )"

Dave Smith Instruments Pro 2 44-Key Monophonic / Paraphonic Synthesizer

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via this listing

Vintage Casio CZ-1 Synthesizer + Case + ROM Card + Cover SN B00001259

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via this listing, also on Reverb

Akai S900 MIDI Digital Sampler SN 10825-00382

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via this listing

"Akai S900 MIDI Sampler works properly, usb upgrade, software 4.0. AC 120V-60Hz-42W

The S900 sampler is Akai's first truly professional sampler, released in 1986. Its sampling specifications were pro-quality at the time: 12-bit stereo sampling, 7.5kHz to 40kHz variable sampling rates and a maximum of 63 seconds of sample time at 7.5kHz. Up to 32 samples can be created and stored to disk along with any edit settings. This is one of the first rack-mount samplers to use a built-in disk drive. Although the drive could load sounds while you play, it was still a very slow process."

SIMMONS SDS1 Drum Synthesizer SN 10055 & 005331

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via this listing

"The SIMMONS SDS1 Drum Synthesizer, a versatile musical instrument that brings your drumming skills to the next level. 6.35mm (1/4\") TRS/TS Out output port to connect and play your favorite beats. This analog drum synthesizer is perfect for those who love to jam and create music, whether you're in the studio or on the go. The SDS1 also comes with a battery power feature, making it convenient to use anywhere and anytime. As a drum pad, this is the vintage electronic drum sound. Get your hands on the SIMMONS SDS1 Drum Synthesizer today and experience the power of analog sound.

Original Owner
Set of Two Drums (as pictured)
Fully Functional (I run on AA batteries)
Big Vintage Synth Drum Sounds
Both Tunable and Polarity Adjustable from Very Deep to Bright
Two Different Tom Tom Chips
Uses EPROM Sample Chips"

Tuesday, April 16, 2024

Roland Jupiter 4 early rarest version (w BA662 filters) + flight case (SERVICED) SN 902159

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via this listing

"This is the rarest early version with x4 BA662 filters for each voice

with more punchy and fat sound...(despite the latest versions which have only 1 IR3109 filter chip for voice)"

Pics of the inside below.

cre8audio East Beast Semi-Modular Analog Synthesizer

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via this listing

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DSI Prophet 12 Desktop Module Hybrid Synthesizer

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via this listing

Additional Perfect Circuit listings

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