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via this auction
Great drum machine.
Friday, May 23, 2014
ATARI VCS 2600 SYNTHCART
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via this auction
"Synthcart is a cartridge for Atari 2600 game console that turns it into a basic synthesizer with an argeggiator and built-in rhythm patterns. The controls are designed so that it is possible to use without a TV, allowing it to function as a stand-alone synthesizer. Synthcart requires a set of Atari keyboard controllers. AUDIO DEMOS: audio1 audio2 audio3 VIDEO CLIP: light_show_mode.mpg FEATURES: - Play using an assortment of familiar Atari sounds - Use two different sound types at a time, one assigned to each controller - 8th, 16th, and 32nd note arpeggiator - Beat Box with many pre-programmed beats and fills - Play two beats simultaneously to create custom beats - Two tremelo settings - Four attack/release settings - User interface designed so that a TV is not required (see FAQ below) - Easter egg: light show mode that displays color patterns based on sound output. To activate, put the scale on "major" and put the left keypad on "pitfall" or "saw" and play the notes: 4 7 8 9 8 9."
"Synthcart is a cartridge for Atari 2600 game console that turns it into a basic synthesizer with an argeggiator and built-in rhythm patterns. The controls are designed so that it is possible to use without a TV, allowing it to function as a stand-alone synthesizer. Synthcart requires a set of Atari keyboard controllers. AUDIO DEMOS: audio1 audio2 audio3 VIDEO CLIP: light_show_mode.mpg FEATURES: - Play using an assortment of familiar Atari sounds - Use two different sound types at a time, one assigned to each controller - 8th, 16th, and 32nd note arpeggiator - Beat Box with many pre-programmed beats and fills - Play two beats simultaneously to create custom beats - Two tremelo settings - Four attack/release settings - User interface designed so that a TV is not required (see FAQ below) - Easter egg: light show mode that displays color patterns based on sound output. To activate, put the scale on "major" and put the left keypad on "pitfall" or "saw" and play the notes: 4 7 8 9 8 9."
Elektron Monomachine SFX60+ MkII Sexy Swedish Synthesizer Sequencer Drum Machine
Oberheim Dx Drum Machine
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via this auction
via the seller: "I am including 3 full sets of EPROMs with this sale. I have the stock DX EPROM set as well as the additional DMX percussion EPROMs so you can choose which you prefer. I am also including both full sets of Roland TR-808 and TR-909 EPROM chips so you can use the DX as a replica of either of these classic machines. To change the sounds, you simply pull out the relative chip and replace it with the desired sound. This makes the DX incredibly flexible for different styles and still gives you the sequencing and tuning features the machine has to offer."
via this auction

Yamaha CS-40M SN 1175
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via this auction
"The CS-40m is a duophonic (2-voice) analog synthesizer that was introduced in 1979. Although Yamaha had already conquered polyphony with their legendary 8-voice CS-80, the CS-40m offered a more affordable approach to something other than a mono-synth. It has a semi-compact 44 note (3 1/2 octave) keyboard, 36 knobs, 12 sliders and over a dozen buttons for easy hands-on performance and editing. There are also 20 patches of memory which can be off-loaded to cassette tape."
via this auction
"The CS-40m is a duophonic (2-voice) analog synthesizer that was introduced in 1979. Although Yamaha had already conquered polyphony with their legendary 8-voice CS-80, the CS-40m offered a more affordable approach to something other than a mono-synth. It has a semi-compact 44 note (3 1/2 octave) keyboard, 36 knobs, 12 sliders and over a dozen buttons for easy hands-on performance and editing. There are also 20 patches of memory which can be off-loaded to cassette tape."
Yamaha CS5 Vintage Analogue Synthesiser SN 9926
Creamware Pro-12 ASB Prophet 5 Emulator SN TFLXYX003
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via this auction
"This unit has (2) Buttons that have issues.. Both buttons are in the POLY MOD section..
The FREQ A button lights up but doesn't work.
The FREQ B button does not light up but works fine..."
Mechanical issues. The Pro-12 synth engine is all software.
via this auction
"This unit has (2) Buttons that have issues.. Both buttons are in the POLY MOD section..
The FREQ A button lights up but doesn't work.
The FREQ B button does not light up but works fine..."
Mechanical issues. The Pro-12 synth engine is all software.
MOOG MG-1 VINTAGE SYNTHESIZER SN 4436 with 1/4" Jacks & Filter In
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via this auction
"Here is a near perfect MG-1 that has no issues and works flawlessly. It has been completely de gooped/cleaned with the popular Filter in jack added by Tim at Synapse Audio/Portland Custom Shop. So it's ready to be your new tone machine. Cosmetically it's in near mint as well. 3 of the slider knobs are missing their silver top. Couple marks on the faceplate and that's it. Super clean. I'll miss her.."
via this auction
"Here is a near perfect MG-1 that has no issues and works flawlessly. It has been completely de gooped/cleaned with the popular Filter in jack added by Tim at Synapse Audio/Portland Custom Shop. So it's ready to be your new tone machine. Cosmetically it's in near mint as well. 3 of the slider knobs are missing their silver top. Couple marks on the faceplate and that's it. Super clean. I'll miss her.."
Hexinverter SympleSEQ v2
Published on May 22, 2014 Ritchie DeCarlo·6 videos
via this auction

- Tempo control
- Selectable sequence length (1-8)
- Simultaneous 5V and ~10V CV and Gate outputs. This means you can use sympleSEQ for pitch CV as well as higher amplitude stuff like filter modulation
- Flexible clock input accepts a wide range of voltages to clock the sequencer from
- Clock output
- Pause and Reset switches
- Pause and Reset inputs (Voltage high = active)
- Input a variable pulse-width clock and control the gate length by adjusting the pulse-width!"

Baby Jane Yamaha CS 50 Analog Polyphonic Synthesizer
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via this auction
"1977 Yamaha CS50 polyphonic synthesizer. I am the second owner of this keyboard. This synth has been used and maintained by working musicians. It has never been stored and has always been under use. This is the best way to keep a synth going strong is constant use and maintenance. It was recently serviced by Deltronics in Chicago."
via this auction
"1977 Yamaha CS50 polyphonic synthesizer. I am the second owner of this keyboard. This synth has been used and maintained by working musicians. It has never been stored and has always been under use. This is the best way to keep a synth going strong is constant use and maintenance. It was recently serviced by Deltronics in Chicago."
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© 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