No mention in the listing whether he owned one in general or if this is his specific unit. Regardless the SX-WSA1 is interesting in that it employs physical modeling synthesis and that it's by Technics. You can find previous posts featuring the WSA1 including some demos here.
"This is ambient music with my Technics WSA1. While I am in progress to programm a bank of 64 amazing custom patches, I also start create the first song with it.
I used for the recording the following FX chain:
Pigtronix Echolution 2 Deluxe - GFI System Specular Reverb 2. Depending on the recorded track some FX are deactivated
The signal went through a Presonus StudioLive 16.0.2 into the PC via USB for recording. To create the complete song I recorded consecutively several stereo tracks, while a specially prepared track exported an run through a tasty chips electronics GR-1 for granular time streching. The final song was then mastered with a bit EQ and compression on some tracks and iZotope Ozone on the master track."
"This was Technics flagship digital synth and delivers rich and unique sounds that stand up to any big name synth of the mid 1990s. Deep bass, punchy drums and ethereal pads and sweeps will delight anyone into deep synthesis and sound design.
Acoustic Modeling Synthesis, a method to combine PCM waveform drivers with custom digital signal processing modeling resonators, is a way to simulate the sound process of acoustic instruments. It gives players full control over the parameters for the driver and resonator, and is a great system for anyone who wants to move far beyond the preset sound sets.
Unique sound combinations are possible and these can also be crossfaded by key or velocity. For anyone used to synthesizers that were restricted to their presets and ROM samples, this was a revelation. Technics were also able to accomplish 64 notes of polyphony."
"Technics WSA1, 1 of only 600 in existence. Comes equipped with a Gotek USB floppy emulator filled with a library of sound banks...
Released in 1995 and in addition to classic analog and digital synth sounds, the WSA1 is very unique in its acoustic modeling capability, competing with the tech of the time from the Korg MOSS and Yamaha VL1.
"Yeah. I knew it needed fixing when I bought it.
Improper packaging damaged it further.
I can't let this synth continue to be passed around again without a good restoration."
Repairing the Technics SX-WSA1 Acoustic Modeling Synth
manuals:
https://members.technicskeyboards.com...
hyper- enthusiasm:
https://www.gearslutz.com/board/elect...
short article:
http://javelinart.com/technics-sx-wsa...
screen info:
https://www.ued.net//ued/viewItemActi...
Sam at Syntaur:
https://syntaur.com/
More info from across the N E T:
https://xy.cx/synth/wsa1/
https://sonicstate.com/synth/technics...
https://sonicstate.com/synth_reviews/...
https://www.kvraudio.com/forum/viewto...
https://www.reddit.com/r/synthesizers...
https://www.matrixsynth.com/2019/11/t...
https://yamahamusicians.com/forum/vie...
https://en.audiofanzine.com/workstati..."
Kind of interesting side note is the AN1X was branded as an Analog Physical Modeling Synthesizer. You can see it on the top right. However, it did not feature physical modeling as the KORG Z1, Prophecy, Technics WSA1, and Yamaha's own VL synths. Back when physical modeling and virtual analog synths were new they were often referred to either physical or analog modeling synths. Somehow Yamaha mixed the two in the AN1X.
As for the oscilator modelling on the AN1X it featured 2 oscillators per voice: square/ sawtooth/ pulse width/ ring modulation/ noise/ FM/ variable wave-shapes (Edge - sine/triangle)/ Saw2/ Inner1-3/ slave(sub) osc on osc1
You'll notice the lack of any modeling of real world instruments - brass, bowed strings, plucked strings, etc... It is a great sounding synth and offers a bit more in the oscillator section than many other virtual analog synths.
"Rare WSA1 keyboard. If I'm not mistaken, only 200 made. This one is in good condition with some scratches, everything works surplus to requirements. Please contact me for postage as I would prefer this to be picked up and checked before taken away. Its very heavy...
From the website:
What is Acoustic Modelling Synthesis?
Putting theory into practice is Technics' latest breakthrough in synthesis technology - Acoustic Modelling Synthesis. While retaining the much-coveted qualities of conventional PCM (Pulse Code Modulation) subtractive sound reproduction, Acoustic Modelling Synthesis combines PCM waveform drivers with custom DSP (Digital Signal Processing) Modelling resonators.
By first extensively analyzing the nature of acoustic sound, Acoustic Modelling Synthesis then digitizes the physical process recreating it. This technology ideally simulates the sound-emulating process of acoustic instruments.
Nearly all modelling parameters can be accessed in real-time by using various on-board controllers and key touch. Additionally, by manipulating the Realtime Creator / Controller along the X-Y axis, the user can control up to six parameter sets registered for each sound.
This flexibility allows the control, for example, of where you strike the surface of a drum or of the mouthpiece angle on a flute.
SX-WSA1
Acoustic Modeling Synthesis (PCM waveform driver with DSP Modeling resonator)
64-Note Polyphony
Large graphic display (320 x240 dot)
Drum kit edit by Acoustic Modeling Synthesis
Controllers: Realtime Controller, Realtime Creator, Pitch Bend Wheel, Modulation Wheel 1 and 2 for realtime editing
Preset sounds: 256 sounds, 128 combinations
User sounds: 256 sounds, 128 combinations
Remap function
Digital drawbars
Pitch, filter, amplitude with individual envelope and LFOs
DSP effects: 3 blocks, 43 algorithms (plus 12 algorithms in REV block)16-track, 47,000-note capacity professional standard sequencer (for sx-WSA1 only)
2 sets of MIDI terminals
GM compatibility
SMF direct play"
"How to create a pad sound on a synthesizer (Technics WSA1R). As announced, I'm taking a closer look at the Technics WSA1R's synth engine and it's physical modeling capabilities. If you were wondering how the modelling synthesis on this machine works, this is the video for you. If you just want to hear some sounds, watch this video: [posted here]
Table of Contents:
00:00 Introduction
01:00 User Interface
01:37 Drivers ("oscillators") and resonators
02:15 Showcasing some resonators
02:28 Interactions
04:00 Connection of the driver to the resonator
04:35 Driver movement automation
05:22 Properties of the resonator
07:35 Amp Envelope & LFO
09:56 Pitch Envelope & LFO
10:41 Filter Envelope & LFO
13:34 Insert Effect
14:35 Global Effects
16:24 Controller Setup
17:34 Conclusion
18:31 playing some chords"
"Just a short improvisation on the Technics WSA1R. The E-Piano is a preset sound, the other sounds are custom ones. The Technics WSA1 is a physical modelling synth released in 1995."
This one is in via Jusuf in the comments of this post. Many have been featured on the site before, some haven't. Enjoy! :)
Playlist at the time of this post:
Technics sx-WSA1R demo - that other acoustic modeling synth from the 90s - Floyd Steinberg
Best Ambient Synth Shootout #26: Technics WSA1- Song 1 - Christian's Sonic Spaces
Best Ambient Synth Shootout #27: Technics WSA1- Song 2 - Christian's Sonic Spaces
MOV 0217 - hien trinh
Technics SX-WSA1 MarkovModels - Tom Noopher
technics wsa synthesizer - some physical modelled sounds - borgmechaniker
puredata-algorithmicsequencer-02.mp4 with Technics WSA - borgmechaniker
Demo technics sx-WSA1 part1 - gravili
Technics WSA 1 Sound Demos mit 4 von mir improvisierten Songs - Musiker Lanze
both units are now sold. bye bye my synths. - myRegression
Korg JP8000 JP-8000 Review (Technics WSA1 WSA-1) - TR0LLreviews
LooPing petit bout de piano - LooPingVideoHome
Stay with me - Andreas Fechner
Improvisation 2 - Andreas Fechner
Koródi Csaba - Improvizáció - Szintimánia
Technics WSA 1 Film Demo - Dave Blackburn
BuddyN-Trance masterclip - BuddyMYT
Technics SX-WSA1 Ambient Demo - Blake Foster
TECHNICS WSA1 - Demo Song - Szintimánia
Tax-5 - The Labyrinth (Dark Ambient) - Technics WSA1 - Stephan S
Technics SX WSA 1R Synthesizer - Chillout Demo, by Clouds Testers - Alexander Bobrov
Demo Technics sx-WSA1 part2 - gravili
WSA1- Technics - Piano Steinway & Sons - Por Rogelson.mpg - Roger Syst Gama
technics wsa1 view sơ qua phần FX chỉnh tiếng. - hien trinh
Short Technics WSA1 Jam with Ryan - "Garbage Truck" :) - CoolColJ
Technics WSA1R Sounds - borututu forte
Technics WSA1 - Changing the display - 01 - roghelson
Cool/Funny ad - Technics WSA - lbulbu
groove - mruebsam
T.W.G music: lost - T . W . G
Magic World - Andreas Fechner
Live Jam #18 (LXR, acid8, DCM8, JP-08, Shruthi-1, V-Machine, System-1m, Atmegatron, SX-WSA1, etc.) - Christian's Sonic Spaces
Best Ambient Synth Shootout #28: Technics WSA1- Song 3 - Christian's Sonic Spaces
RS - Song for C (featuring Technics WSA1) - stratomoto
Technics WSA1 / WSAr - Synt Hudba
"Technics sx-WSA1R - that other acoustic modeling synth from the 90s. (Table of contents below!) In this video, I'm playing a short demo with custom sounds and a number of presets. The Technics WSA1 is a 64 voice polyphony, 32 part multitimbral modeling synth from 1995 with some unique features. According to Wikipedia, only 300 of the rack mounted version shown in this video exist. I will have an in - depth look at the synth engine next week. (Subscribe if you want a notification on that).
00:00 short demo showing of the filters. Each voice can have 4 "oscillators" and each "oscillator" can have it's own filter, LFO and envelopes.
01:50 hello
02:16 Presets: WSA Piano
02:52 Piano
03:35 E-Piano 2
04:29 Modern E.P. 1
05:11 Harp
03:35 Spanish Guitar
06:00 12 String Guitar
06:22 Synth Strings 2
06:55 Stereo Vocal Ah
07:14 Vocal Daa
07:34 Drawbar Organ (with drawbars, you guessed it)
08:13 Synth Brass 1
08:32 Warm Synth Pad
08:58 Sweep Pad
09:46 Goblins
10:35 Windy Sweep
11:29 a very subtle hint that subscribing doesn't hurt you and is good for my motivation to post videos"
"Acoustic modelling synthesizer. Ahead of its time, and still a unique tool/instrument. Only 600 made. Includes manuals and reference guides. Check it out here and here"
"These were only made for a short time and from what I can find about them there was only 600 of them made. Here's your chance to own a very nice and clean one.
-everything functions as it should, has been reset to factory settings.
-This keyboard is in very nice shape, very little scuffing and signs of use, very clean!
-For whatever reason the cosmetic portion of the volume slider is missing, no problem using as it is or could be replaced easily.
-The unit was brought in from out of the country and was then professionally modified for use with 120V AC electricity, so to be clear, it is configured currently for 120 volt AC for the United States.
Here's some info from the internet:
The Technics SX-WSA1 puts you at the controls. Nearly all modeling parameters can be accessed in realtime by using various easy-to-operate controllers such as the Pitchbend and Modulation wheels, Realtime Controller, Realtime Creator, Key Touch and more. The Realtime Creator and Realtime Controller each allow you to control 2 parameters at one time (X-Y axes). The Realtime Creator knob maintains the last set position, while the Realtime Controller returns to its neutral position. In addition, up to six sets of parameters can be stored for each sound, allowing rapid assignment to the Realtime Creator or Realtime Controller! This makes it possible to control, for example, where you strike the drum surface, the mouthpiece angle on a flute, or the embouchure of a trumpet. These controllers give you the freedom to fully express yourself in your music. At last, your creativity is limited only by the imagination.
Sounds that are out of this world:
The Technics SX-WSA1 also gives you the power to create a virtually unlimited range of instrument sounds. For the first time, you're no longer restricted by the sound sets in your instrument. Imagine, you now have full control over the parameters for the driver and resonator. This lets you form unique combination sounds like a tom-tom "fusing" into a chopper bass, or a guitar with a flute resonator. Sounds can be "crossfaded" by key or velocity. Even more astonishing, you can construct virtual instruments that cannot be built in reality. Now, that's really out of this world!
With all these creative possibilities offered by the WSA1:
It would be a shame not to have sufficient polyphony. That's why this synthesizer features not one, but 64-note polyphony—the culmination of Technics' outstanding achievements in advanced LSI research. With 64-note polyphony, you have all you need fully orchestrate your music.
More outstanding features:
The Technics WSA1 features a large graphic LCD screen which makes its operation both intuitive and extremely user-friendly. The 16-track, 47,000 note Sequencer includes some graphical editing capability. There are two MIDI ports (IN/OUT/THRU) to allow you to make the most of the 32 MIDI parts available (32-part multi-timbral), and there are four line-level outputs (two stereo pairs) to get it all to tape or the PA. If all that isn't enough, there is an optional Output Expansion Board which provides four additional line-level outputs and an S/PDIF digital coaxial output. An optional Wave Expansion Board will provide you with access to even more driver sources. Acoustic Modeling, Real-time control, and 64-note polyphony, a 16-track Sequencer with enough MIDI parts and outputs to make the most of it. A large, graphical LCD screen to tie it all together in one powerful, easy to use package, Technics is all you need."
Kind of interesting side note is the AN1X was branded as an Analog Physical Modeling Synthesizer. You can see it on the top right. However, it did not feature physical modeling as the KORG Z1, Prophecy, Technics WSA1, and Yamaha's own VL synths. Back when physical modeling and virtual analog synths were new they were often referred to either physical or analog modeling synths. Somehow Yamaha mixed the two in the AN1X. 
"Unique instrument/tool. Only 600 ever made.
"Rare WSA1 keyboard. If I'm not mistaken, only 200 made. This one is in good condition with some scratches, everything works surplus to requirements. Please contact me for postage as I would prefer this to be picked up and checked before taken away. Its very heavy...
From the website: 
What is Acoustic Modelling Synthesis? 
"These were only made for a short time and from what I can find about them there was only 600 of them made. Here's your chance to own a very nice and clean one. 
-everything functions as it should, has been reset to factory settings. 
