MFOS WP-20 Experimental Analog Synthesizer & 8 Step CV/Gate Sequencer

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via this auction

See this post for a demo of one in a different case.

"WP-20 experimental analog synthesizer which also comes with a 8 step CV/Gate sequencer, along with N.American power supplies and two 1/8" cables for connecting the CV and Gate input/outputs together. Please check out the pictures of this unit as it has a very unique hand made look. The cases are aluminum with hand stamped labeling.

This is one wild unit, capable of much more than its humble specs indicate. It really shines in wild FM sounds, but can also play nice warm analog tones as well. But please be aware, if you are looking for a traditional synthesizer - keep looking! There is no MIDI and its VCO does not scale to V/Oct. Although it is certainly will play nice melodies using the 8 step sequencer you should not buy this thinking you are getting a Novation Bass Station, this is an 'experimental' synthesizer instead.

- VCO with square and triangle
- A VCF with resonance switchable
- VCA
- Loopable A/R generator with a manual trigger button (can get into audio range in loop mode)
- LFO with saw/triangle and square waves (which can also get into audio range).

There are 1/8" inputs for CV (pitch) and Gate (to trigger A/R).

The 8 Step sequencer has, you guessed it - 8 steps. But you can switch between 2, 3, 4, 5, 6 or 8 steps via the "steps" knob. 1/8" outputs for CV and Gate as well as a 1/8" input for external clocks (but note - some of the clocks from my modular would trigger the WP-20, and others would not).

If you would like to hear some of what this machine is capable of, I recorded a 10 minute track using the WP-20 as the sole sound source along with the 8 track sequencer (I also ran the WP-20 through some effects pedals, including a Cimmerian Caves and a home made spring reverb - plus some VST effects). Listen Here:

https://soundcloud.com/artificial-noise/wp-20-sessions

It is an odd unit, certainly not perfect - but if you use its for its strengths (and not focus on its limitations) you can create some very interesting sounds. Lo-fi, warbly and weird is how I would describe it."

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WP-20 Experimental Synthesizer - Noise, FX, Drone

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The WP-20 is an MFOS DIY synth. You can find a couple of demos and other user designs in the archives.

"Here is a quick demo of me noodling around on my custom built WP-20 Synthesizer. There is reverb added. The last 4 minutes or so are two tracks of WP-20, with one track run through the Cimmerian Caves dual echo unit + CV and Gate input from my modular system."

via this auction

"Selling my hand made WP-20 Synthesizer. Keep in mind this is hand made (etched the circuit board myself!), and it has an appearance as such (see photo's). The panel lettering is hand painted with a clear coat of varnish over top. The end cheeks are stained oak.

It can best be described as an experimental / FX / drone synthesizer. It has the following circuits:

- One VCO synthesizer (square or triangle wave) with external CV input
- One LFO (square or triange/sawtooth) with multiple destinations. It will get into audio freq.
- One loopable Envelope generator (attack & release) which can be triggered via trig button or externally and it can also loop and act as a second LFO, with multiple destinations. It will also get into audio freq.
- One VCF with Hi/Low Resonance
- One VCA
- One Noise source

I have used it in conjunction with my eurorack modular to control the pitch CV and gate input (for the Envelope generator) and it works great. It comes with a North American power supply, but will run on any 9v DC (center negative) power supply with at least 500mA

Don't expect this to act as a traditional synthesizer, its an odd little machine!"

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Soulsby Atmegatron v2.5 Update Adds MIDI CC Supprot and More

via the Soulsby Forum:

"V2.5 is released! It's available here: http://soulsbysynths.com/wp-content/uploads/2017/10/AtmegatronV2-5.hex

new features are:

* Global settings reorganised. Function dial still does MIDI channel. Value dial does multiple on/off parameters. These currently are:
0 = Enable MIDI thru
1 = Enable MIDI program change
Red knob = parameter on
Yellow knob = parameter off

To access the global settings, power the Atmegatron on while holding down the function knob. Cycle power to leave global settings

* The test button works again with Arpeggiator patches

* Fixed a couple of warnings when compiling in the Arduino IDE

* Add MIDI CCs for all parameters. These are:
1 Pitch LFO (small range)
5 Portamento
16 Filter env amount
17 Distortion amount
18 Arpeggio type
19 Arpeggio clock div
20 Wave crush preset
32 Waveform
33 Filter Type
37 Filter normalise mode
38 Filter envelope invert
39 LFO invert
40 Arpeggiator PingPong
41 Proportional Portamento
42 Wavecrush pre-filter
71 Filter resonance
72 Amp envelope release
73 Amp envelope attack
74 Filter cutoff
75 Amp envelope decay
77 Pitch LFO (full range)
78 LFO shape
79 LFO clock div
80 Amp envelope sustain
81 Filter envelope attack
82 Filter envelope decay/release
83 Filter envelope sustain
91 PWM amount
92 Amplitude LFO
93 Filter LFO
94 Pitch envelope
95 Phaser amount
123 All notes off"

Yamaha DX7II Sound Design Demo

Published on Sep 3, 2017

"This Video is a Sound Design Demo of Yamaha DX7II. No External FX.

http://d-edgesound.sakura.ne.jp/wp/20..."

Roland Museum Germany Massive Synthesizer Selloff - Most Gear for Sale in a Single Auction

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This one in via Marko of Retrosound.de.

26.000,00 Euro gets it all.

via this auction

Someone needs to contact the Guiness Book of World Records. Longest list of gear for sale ever:

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Roland System 100 Skinned MFOS WP-20 Analogue Synthesizer

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via this auction

"its a basic synth with 1x vco, 1x noise source, 1x lfo,1xenvolope generator ,1x vca and 1x vcf capable of soom interestig old school sounds just add some reverb etc it runs on 2 9v battries it has 1/4 audio out, a3.5 trigger in jack, a3.5mm control voltge in jack and 3.5 jack for audio input to filter. their is ahole in the pannel in lfo section where last owner was going to add LED but never got round to doing..."

Final Set of A-Z of Analogue Synthesisers

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via this auction

The listing is from the author Peter Forrest who states this is likely the last set.  These are great books and imo the most comprehensive.  Click on the pics to get an idea of what they are like.  Peter also has other items listed including The Museum of Synthesizer Technology and Synthesizer von Gestern II.

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WP-20 Simple Synth synth-02

flickr by arnont_arnont
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MFOS WP-20 Mini Synth - 2'nd test

YouTube via LofiNinja.

follow-up to this post.

"2'nd test of my D.I.Y MFOS WP-20.. I added a "repeat rate" potentiometer instead of the fixed resistor.. Very big difference! Build from junkbox parts, so all potentiometers are wrong values and logarithmic insted of linear.. Quite the task to control it! Still in testing/modding state so for the time being the panel is cardboard.."

MFOS WP-20 Mini Synth - Virgin Voyage

YouTube via LofiNinja

"First sounds from my D.I.Y MFOS WP-20.. Build from junkbox parts, so it's quite hard to control.."

Syn-Bin DIY

By-Tor on electro-music.com just set up a site on some of Ray Wilson's Music From Outer Space designs. You can check out Syn-Bin here. Currently listed are the Weird Sound Generator, SoundLab Minisynth, WP-20 Mini Synth.

WP-20 Mini Synth

Another from GetLoFi. How about I just post a pic and say click through to GetLoFi for more. Back to scrounging the net... : )