YAMAHA DX7II CENTENNIAL LIMITED EDITION 16-Voice FM Synthesizer - Silver / Gold

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via this auction

"You don’t see these very often. The rare and highly collectible centennial edition DX7 is quite a sight to be seen with its silver/gold accents and glow in the dark keys.

A very mysterious collectible with some speculating that only 100 were ever made. (Nobody seems to have the straight answer on this)."

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Elka Drummer One

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via this auction

"Recapped psu and completely cleaned, in perfect working condition. All pots and switches are perfectly working and it sounds great. Rarely seen in such an amazing condition. With switchable PSU currently set to 220 V."

You can find demos of the Elka Drummer One in previous posts here.

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Waldorf Q Rack

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Roland JX-3P

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via this auction

"Very well preserved, fully working condition, sounds great.
Just a few minor traces and a sticker on the back.
220 V."

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ARP Avatar

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via this auction

"Non working condition. Powers up but makes no sound.
Needs complete overhaul. Visible rust on panel.
110 V version."

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Korg X-911

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via this auction

"Recapped and cleaned, works great and sounds amazing. Used as an MS-20 expander and was triggered with control voltage from MS keyboard. Last button is loose. 220 V."

Update: You can find a few demos of the X-911 in previous posts here.

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Akai S612 MIDI Digital Sampler

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via this auction

"Perfectly working condition and in original unmodified state. Super simple 8 poliphonic sampler which excells in live splicing/looping as a perect glitch machine."

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Vactrol Hell

video upload by Peter Grenader

"Entering the final stretch of vactrol testing prior to final assembly of the EAR M13 Mini Vactrol LPGs"

GERMANIUM transistors based ladder VCF

video upload by Eternal Engine EMI

"While the boards for the MARS project are being delivered, I came across a stock of soviet germanium transistor arrays 1ТС609А (GTS609A). I decided to make a filter on them. It sounds very interesting. What do you think, comrades, should I make a synthesizer based on them?"

Synthesis Basics: How To Ring Mod, FM, and AM

video upload by Patchwerks

"In this video we talk about 3 types of modulation commonly used in synthesis. Ring modulation, frequency modulation, and amplitude modulation. Learn how to do it and what it sounds like.

Get the Intellijel Ring Modular here: https://bit.ly/ring_mod_int
Get the Sputnik Variable Waveform Generator here: https://bit.ly/sputnik_waveform_gener...
Get the ALA Beehive (Plaits) here: https://bit.ly/ala_beehive
Get the Mordax Data here: https://bit.ly/mordaxDATA

https://patchwerks.com/
Video by: Matthew Piecora ( EZBOT), Steven Ly (Project 32)
https://www.ezbot.live"