MATRIXSYNTH

Vintage Multivox Basky II Synth Bass Pedal SN 265295

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via this auction

Pics of the inside below.

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YAMAHA CS-10

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Rhythm Active (RSS)

Sequential Circuits Prophet VS - Fully Serviced, New Sensors & OLED Screen

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"Just been fully serviced by James Walker in Stoke, has had a stunning new OLED display fitted and new after touch sensors, also has the rare RAM cartridge that allows you to build you own waves/vector tables.

The unit is in excellent cosmetic condition with only minor makings to the edges, has the latest OS V1.2, the factory sounds uploaded and comes with a copy of the manual..."

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Roland Jupiter 6 with Europa Upgrade SN 322415

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sir_analog (RSS)

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Arp Odyssey MK1 2800 Analogue Synthesiser SN 282795

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sir_analog (RSS)

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Knobcon Rehearsal

TheSynthFreq & MsMotif6 prep.

via Suit & Tie Guy on Facebook

Knobcon starts tomorrow.

KORG Polysix "Primabella"

"(c) 2013 vintage demo track by RetroSound

all sounds: KORG Polysix analog Synthesizer (1982)
drums: LinnDrum
recording: multi-track without Midi
fx: a bit delay and reverb"

via Marko Ettlich on The MATRIXSYNTH Lounge

nonlinearcircuits Neuron - Difference rectifier (papernoise panel)

"A DIY module combining a dual analog neuron and a dual differential rectifier circuit

The Difference Rectifier has 4 inputs (two + & two -) and two outputs. The Neuron has two inputs and one output. There is a pad labelled 'ext' where extra inputs can be added if desired (use a 100k resistor attached to the jack).

All inputs for both circuits can be wired to attenuating pots if required. The two pots on the PCB are the critical Offset and Invert controls for the Neuron. The Offset is slightly modded from the previous Double Neuron PCB as it now ranges between +V and -V and its effect is halved by the 200k resistor to give greater useful range.
Schematics and demos - Difference Rectifier and Neuron
Build manual pdf"

Additional details & links on nonlinearcicuits here.