Yellow Waldorf Q Synth Keyboard

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Make Noise MMG Vactrol/CV controlled Filter / LPG

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"vactrol based voltage controlled filter and low pass gate using our qmmg core. the mmg bridges the far east and west coast synthesis styles by allowing for highly resonant acidic squelch and organic, percussive animations to be programmed simultaneously with a single module"

Stored Program Sound Source Model 208r + Buchla 4U Boat

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Some pics of the inside below.

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EDP Wasp with Elby MIDI (dark side)

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"A rare chance to get hold of a fully refurbished EDP Wasp in near perfect condition including the Elby MIDI retrofit (that allows you to play the wasp over 4 octaves). Just serviced at Synth Repair Services"

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Oberheim DSX Sequencer SN A40707

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Note the plastic wood sides. The Oberheim DX series used plastic while the OB series used real wood.

"Software version 2.22. The Eproms are labeled: CD1, CD2, CD0. Serial Number is A40707."

Update: according to Loren in the comments his had wood side panels.  Plastic panels may have been introduced later?  My DX has the plastic sides.

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Sequential Circuits Prophet 5 Rev 3 SN 4623

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Roland Jupiter-8 JP-8 117V DCB/MIDI SN 050219

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Roland Jupiter 6 Analog Synthesizer with Europa, Flight case, Service Manual

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"Auction includes the following:

Roland Jupiter 6 Synthesizer with Europa Mod.
Power cord
Service Notes with full Circuit Schematics / Prints
ATA Calzone Flight Case
Le Cover Vinyl custom cover
Europa Operation Instructions/Installation Guide

This is a Classic 6 Voice Analog Synthesizer first produced in 1983.
Cosmetically this is 9/10 ( XLR output jack has a crack, does not effect audio)
Functionally this is 10/10 (no dead voices/filters/adsr etc)"

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The Oberheim Oberview with Noise Nachos

Flickr by Scott Rogers

"Oberheim once sent me this when I ordered a manual from them. It's called Oberview and has some cool info and a neat patch."

I might have some of these lying around somewhere.  I got them when I picked up my first synth, a Matrix-6, back in the day, hence matrix.

Pictured in order:

"Music Superheroes & DPX-1 and the K-MUSE Library" on page 1.

"Using Noise Modulation on the Matrix-6/6R" on page 2. Noise Nachos patch for the Matrix-6/6R in the bottom right.

"Matrix-6 Pedal Programming" on pages 3 & 4.

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Grove Audio Eurorack USB MIDI to CV Converter

"A Eurorack compatible USB MIDI to CV converter uses the Teensy 3.1 microcontroller as its USB port and controller. The 6HP wide unit includes 2 CV channels, 2 gate channels, an isolated DIN MIDI input connector and a DIN MIDI output connector.

The control voltage output range is internally settable to 0-10 Volts or -5-+5 Volts. The gate signal is 0-5 Volts active-high. The software for the unit is open-source and can be reloaded and modified by the user. A programming development environment that utilizes the Arduino IDE with a Teensy support add-in can be used to create new functions using Arduino-like commands.

The module will be available in the Synth Store either assembled or as a complete kit. A demo program will be available that provides a two CV output and also allows USB MIDI note commands to be sent and received from the serial MIDI ports."

via Grove Audio