1976 Yamaha SY-2 Synthesizer Fly It Yourself Print Ad

via this auction

"Original vintage magazine advertisement. Approx 8 1/4" x 10 3/4"."

BugBrand Micro Crusher Sample Reducer Bitcrusher

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"This is a rare and excellent bitcrushing/sample reducing pedal, very difficult to find outside of the UK.

Controls are Rate and Blend. The pedal has a push button on/off switch,
there is also a jack to connect an external switch for on/off.
This pedal has been tested and is in good working condition. Auction includes pedal, manual and original power connectors.

Pedal has mild to moderate wear, some scuffs and scrapes.
Uses standard "boss-style" 9v negative tip adapter.

MANUFACTURER'S INFO:

BugBrand MicroCrusher

The Micro BugCrusher returns after two years away - updated and in a new package!

The BugCrusher effect comes from using a Sample & Hold circuit clocked at audio rates - this Sample Rate Reduction is an analogue process and should not be confused with BitCrushing [most BitCrush plugins will have Sample Rate and Bit Depth controls]. Rate Reduction sounds somewhat like RingModulation, but tends to appear more musical - at high frequencies you get a fizzle to the sound while maintaining most of the original audio, and at low frequencies any high notes will seem to wrap-around and the overall sound is much more chaotic. You could read about Aliasing and Nyquist for further technical details.
The Micro or μCrusher features two simple controls, one to set the Sample Rate and one to Blend between the Dry and Effected signals.

There is a button to Engage/Bypass the effect with a status LED. As the case and switch are not designed to be stompable, an external footswitch can be attached via the front jack socket. This should be a simple momentary switch such as keyboard sustain pedal. Switching is achieved electronically and is noiseless - the effect is not true-bypass and audio always passes through an input buffer amplifier even when bypassed. The devices has a unity gain structure and applies no amplification to signals.

The Micro is happy with instrument or line input signals. Input and Output connections are on the rear with standard Mono 1/4" Jack Sockets - note that Mono cables should always be used as inserting a jack plug into the Input socket serves to apply power to the unit in typical stompbox manner.

Power is supplied on a standard external 'Boss-type' 9V Regulated DC Supply with 2.1mm centre-negative barrel plug. A simple battery connector is also supplied with each unit. Max. power consumption is 10mA and the device is polarity and over-current protected..."

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SEQUENTIAL CIRCUITS PROPHET-600 SN 5545

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Akai VX90 True Analog Vintage Synthesizer SN 00650

Note: links to listings are affiliate links for which the site may be compensated. via this auction: "the VX90 is somewhat rare in that it's a true analog synth with midi, not DCO, but analog oscillators. It has six-voice polyphony, a dual voice mode, and a uni- voice mode which stacks all six oscillators together for a huge mono voice! 100 voice memory, each one completely programmable. The sound is typically analog, great for fat Moog type bass or lead voice, string pads, atmospheric effects and burbles. It was designed to accept the output from an Akai S612, 700 or 900 sampler, using its internal filters and modulators to effect the incoming samples using the odd multi pin round jack on the back panel. This unit has this capability plus another unidentified connector which I think is either a scsi input or input for a different sampler..."

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Roland JD-800 Synthesizer Patch Book 1 Pro Patches Original Manual

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via this auction

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Roland JD-800 Programmable Synthesizer Up And Running Quick Start Manual

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via this auction

"Rare original QuickStart manual for roland jd800 synth. Friendly guide to programming a very complicated synthesizer. Some genius spilled some liquid on the back right corner at some point in history but it only caused some cosmetic damage. Pages don't stick together or anything like that."

1991

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Roger Linn at SAE Institute in Hollywood This Friday

"Hello from Roger Linn--

Do you live in L.A.? If so, I'll be speaking at the SAE Institute in Hollywood this Friday, May 24th from 6 to 8 p.m. I'll be demoing brand new features for the Tempest drum machine, plus giving an update on LinnStrument progress and showing some videos of other fascinating new high-tech sensor-based musical instruments.

Click the following link to learn more and to RSVP.

Best,
Roger Linn"

Modular Wild Presents SOUNDS- Make Noise Wogglebug as Random Source

Published on May 19, 2013 modularwild·36 videos

"Exploring a couple of the random cv sources found in the top half of the Make Noise Wogglebug. Sound and Video by Raul Pena.©2013 Modualr Wild, Raul Pena."

Blue Forest song with three Emulators)

Published on May 19, 2013 SynthManiaDotCom·244 videos

"E-mu Emulator, E-mu Emulator II, sampler, synth, Synth Pop"

Logic System - YMO's Hideki Matsutake

via Sleeping Thrills where you'll find the full post including audio.

Vintage DIY on his right?

"Logic System is the musical project of Hideki Matsutake who was the sequencer and synth programmer for Yellow Magic Orchestra between 1978-1982, often referred to as their fourth member. Before this he was the apprentice and later assistant to electronic 'space music' composer Isao Tomita."