MATRIXSYNTH

via this auction

"System includes: 191J CASE, 112 DUAL OSCILLATOR, 121 DUAL FILTER, 130 DUAL VCA, 140 DUAL ENVELOPE GENERATOR AND LFO, 150 S&H/LFO/NOISE AND 181 CV/GATE KEYBOARD WITH PITCH BEND WHEEL."

Future Retro XS Semi - Modular Analog Synth

via this auction

SIEL DK600 / OPERA 6 SYNTH SIDE PANELS

via this auction

"Space-Age Polycarbonate Synthesizer End Cheeks!
Well, to be honest I'm not quite sure what these are made of, but if your Siel's sides are cracked and broken, these are just the thing to spruce the old girl up! In excellent condition, just a couple of minor scuffs on the edges, and no breaks or cracks. Includes original mounting screws, four per side, and easily user installable in about 10 minutes!
Check my other listings for more hard-to-find SIEL spare parts! Please note, these all come from a DK600, but it is my understanding that they are all compatible with the Opera 6 and KIWI as well, but I cannot confirm this personally."

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Sunday Modcan Aleatory

"100% aleatoric (randomly generated) music generated while doing studio maintenance. No MIDI or sequencers are used for composition or playback. All modules are Modcan except for a Cynthia dual ADSR and a Synthesis Technology patch/multiple module."

Update via SteveL in the comments: "you can find more here: http://modularland.com"

Red MacBeth M5N

via Heath Finnie who has two new albums out. Ironically they do not feature the M5N, but it will be featured in a new release.

http://heathfinnie.com/

Some notes on the current albums:
"Two of my albums are now available on iTunes, Amazon, Rhapsody, etc. These are made of of songs/fragments that were worked on over the last few years. So these are compilations, but of things that have never been for sale before. "Sounds From Beneath the Floorboards" is a full albums worth of louder and nosier songs, and the ep "Moments Before the Eclipse" is a mix of some louder and some more melodic songs. I'm putting together "The Leaves that are Brown" which is a compilation from the same period but will feature more mellow and even ambient recordings from the same time period. "

Synths used:
ARP Odyssey MK1
EML 101
EML 200
EML 400/401
EMS Synthi A
Korg MS-10
Korg MS-20
Moog Memorymoog Plus
Oberheim Matrix-12
Roland System 700
SCI Prophet 10

JH Variable Slope Filter / Phaser

via JH on the AH list:
"I'm thinking about making PCBs for this.

A mean little module from my JH-3 Modular.

6 filter poles, realzed with OTAs and combined FET / Bipolar buffer stages.

Variable Slope function for 6-pole VC LPF.
Voltage controlled Pole Spread for Phaser mode.
Zeroes switcahbel in pairs, i.e. a lot of combinations of all pass and low
pass stages. Positive and negative feedback. Positive and negative wet/dry
mix. Rather special overdrive behaviour (Dirty!), and (IMO) pleasant way of
breaking into oscillation.

Old picture (from JH-3) [pictured]

Demo 1 (Arpeggio from OB-8, with delay and reverb. First few seconds dry - then playing with phaser.):
http://electro-music.com/forum/download.php?id=16715

Demo 2 ( This is something I recorded a few years ago. I don't remember all the details. But it was a Split on the OB-8, bass sound on left hand and organ sound on right hand, and the whole thing was processed with the Variable Slope Phaser / Filter to get that "pulsating" sound. Lots of delay and reverb as well, obviously.):
http://electro-music.com/forum/phpbb-files/oct_06_zwischenstand_edit_189.mp3

JH."