via this auction
Monday, December 07, 2020
Akai AX60 Vintage Analog Synthesizer
Yamaha YRM-103 & YRM-104 DX7 MSX ROM Cartridges
Sonica Synthesizer SN 513
Note: links to listings are affiliate links for which the site may be compensated.
via this auction
"Rare Sonica Synthesizer in immaculate condition with case and paperwork.
Number 513 of 650 ever made. Beautifully made.
So weird and rare there's not a great deal about this piece out there."
Video in the listing posted here. See the Sonica label below for more.
via this auction
"Rare Sonica Synthesizer in immaculate condition with case and paperwork.
Number 513 of 650 ever made. Beautifully made.
So weird and rare there's not a great deal about this piece out there."
Video in the listing posted here. See the Sonica label below for more.
Studio Electronics SE-1X Analog Synthesizer
ARP PRO SOLOIST SN 27-875
Note: links to listings are affiliate links for which the site may be compensated.
via this auction
"PRO SOLOIST has a very distinctive aftertouch. You can apply vibrato or pitch bend by pressing the keyboard deeply after making it sound. You can change the tone very finely by controlling the degree of pressing.
The sound is a 1VCO mono synth, but its analog sound is thick and warm, and has a very strong presence. By making the best use of the aftertouch mentioned above, you can play a very lively sound.
Unfortunately the synth needs attention. The synth powers up and plays but some of the presets aren’t working and the signal isn’t powerful as it should be. Also the aftertouch isn’t functioning."
via this auction
"PRO SOLOIST has a very distinctive aftertouch. You can apply vibrato or pitch bend by pressing the keyboard deeply after making it sound. You can change the tone very finely by controlling the degree of pressing.
The sound is a 1VCO mono synth, but its analog sound is thick and warm, and has a very strong presence. By making the best use of the aftertouch mentioned above, you can play a very lively sound.
Unfortunately the synth needs attention. The synth powers up and plays but some of the presets aren’t working and the signal isn’t powerful as it should be. Also the aftertouch isn’t functioning."
Oberheim OB-8 SN C34903
Note: links to listings are affiliate links for which the site may be compensated.
via this auction
"Oberheim OB-8 in beautiful cosmetic condition, fully serviced, calibrated and fully functional. One of the nicest OB-8s in the market at the moment. The front panel is very clean with very minor scratches. Please refer to the posted pictures. 
I zoomed in as much as possible to highlight those scratches. These scratches are less visible on the actual unit. The original wooden end cheeks are also very clean as can be seen in the posted picture.
This OB-8 has is serviced by one of the best techs in Alberta, Canada as of December 2020. Here is the list of the works done on this OB-8:
• All capacitors and bridge
rectifiers are replaced by high quality ones from Synthchaser's “Power Supply Capacitor & Rebuild” kit.
• All capacitors and fixed resistors are replaced with high quality ones from Synthchaser's “Voice Board Ultimate Service” kit.
• Two faulty CEM3310 filter envelope chips on voices 1 and 3 (U111 and U311) are replaced.
• Two faulty CEM3340 VCO chips are replaced with the new CEM3340 Rev G chips on voices 1 and 3.
• Soldered-in battery are replaced with a 2xAAA holder, into which Energizer Ultimate Lithium cells were inserted. A silicon diode (1N4148) was inserted in series with batteries to drop appropriate voltage. Holder mounted within easy reach upon cover removal.
• The following trimpots are adjusted (on all voices where applicable): oscillator 1 V/oct., oscillator 2 V/oct., filter envelope modulation, filter resonance, filter V/oct., filter initial frequency, and lower voice board output level.
• Power supply voltage trimpots T1 and T2 are adjusted.
• All control potentiometers are cleaned to fix scratchiness/intermittency on several controls.
• The MIDI functionality is tested
and the unit receives, transmits, and passes through MIDI data normally.
• All the trimmer are adjusted. No problems whatsoever with the existing trimmers.
• All voice panpots are
tested.
• DAC and bend lever calibration are checked.
• All LEDs are Checked.
• The unit is calibrated according to the factory manual."
via this auction
"Oberheim OB-8 in beautiful cosmetic condition, fully serviced, calibrated and fully functional. One of the nicest OB-8s in the market at the moment. The front panel is very clean with very minor scratches. Please refer to the posted pictures. 
I zoomed in as much as possible to highlight those scratches. These scratches are less visible on the actual unit. The original wooden end cheeks are also very clean as can be seen in the posted picture.This OB-8 has is serviced by one of the best techs in Alberta, Canada as of December 2020. Here is the list of the works done on this OB-8:
• All capacitors and bridge
rectifiers are replaced by high quality ones from Synthchaser's “Power Supply Capacitor & Rebuild” kit.
• All capacitors and fixed resistors are replaced with high quality ones from Synthchaser's “Voice Board Ultimate Service” kit.
• Two faulty CEM3310 filter envelope chips on voices 1 and 3 (U111 and U311) are replaced.
• Two faulty CEM3340 VCO chips are replaced with the new CEM3340 Rev G chips on voices 1 and 3.
• Soldered-in battery are replaced with a 2xAAA holder, into which Energizer Ultimate Lithium cells were inserted. A silicon diode (1N4148) was inserted in series with batteries to drop appropriate voltage. Holder mounted within easy reach upon cover removal.
• The following trimpots are adjusted (on all voices where applicable): oscillator 1 V/oct., oscillator 2 V/oct., filter envelope modulation, filter resonance, filter V/oct., filter initial frequency, and lower voice board output level.
• Power supply voltage trimpots T1 and T2 are adjusted.
• All control potentiometers are cleaned to fix scratchiness/intermittency on several controls.
• The MIDI functionality is tested
and the unit receives, transmits, and passes through MIDI data normally.
• All the trimmer are adjusted. No problems whatsoever with the existing trimmers.
• All voice panpots are
tested.
• DAC and bend lever calibration are checked.
• All LEDs are Checked.
• The unit is calibrated according to the factory manual."
Yamaha CS-30 Analog Synthesizer
Note: links to listings are affiliate links for which the site may be compensated.
via this auction
"This synth is absolutely amazing , semi modular beast with a sequencer. One of the few synths where you can spend hours just playing around with it.
--- Has 2X 3D printed slider caps."
via this auction
"This synth is absolutely amazing , semi modular beast with a sequencer. One of the few synths where you can spend hours just playing around with it.
--- Has 2X 3D printed slider caps."
Moog Polymoog 203a
Note: links to listings are affiliate links for which the site may be compensated.
via this auction
"Brand new from Synthpro, Works as new.
Sounds beautiful"
via this auction
"Brand new from Synthpro, Works as new.
Sounds beautiful"
Comparing FM8 with a DIY Python synthesizer
RPLKTR
"Can 750 lines of Python sound like FM8? Let's find out! We're listening to a live take of "Days of Wine and Roses" switching between the commercial synthesizer by Native Instruments and a DIY Python script.
You tell me whether it sounds passable!
Code available here:
https://github.com/ambv/aiotone/blob/..."
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MATRIXSYNTH - EVERYTHING SYNTH
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
