Steckmatrix "Studio Synthesizer" Modular Format Analog Synthesizer

via this auction

Googlish translation (note some modules are faulty):
"The construction with the Ghielmetti matrix is similar to the EMS Synthi A / Vostok

The "Studio Synthesizer" (his name in the documents) was built in the early 1980s for a music institute. His then the price was a good 5-digit range. It was built based on the format module system, which were, according to the designer and builder of some of the modules nor modified. This is now due to space and light overhaul of need (and lack of detailed electronic and time budget) as possible to a collector, analog synth lovers and / or music-electronics hobbyist sale. (... Ok to the highest bidder ...)

It consists of three modules ("Keyboard / Matrix", "Links: VCOs / LFOs, Right: VCF / ADSRs" and a solid metal frame with castors.

He is very elegant in the different parts and dismantled the frame, the modules and the frame are visible to Langen "handle" screws (left of the big picture) is connected.

Also inside the synthesizer is very loving, clean and professionally built.

The (most likely) complete the design, modification and construction documents are supplied in a DIN A4 Ordener. For example, there are even invoices, data sheets used chips, many clean-hands design drawings and even films for the exposure time while platinum production.

Left Box (v.l.n.r.):

above:
* 2x VCO Type 1: all waveforms continuously mixed, 12 pots / switch (Coarse, PWM, sine, octave, PW, Tri, Fine, Rec, Saw, Rec Shape, Saw Shape), 5 phone jacks (PWM, FM, Saw, Shaped Saw, Rec, Tri, Sine, Saw Shaped), 3 switch (KCV, on, ICV)
* 3x VCO type 2 waveforms switched, seven pots / switch (Coarse, PWM, Octaves, PW, Fine, FM, Out), 3 jacks (FM, PWM, Out), 9 buttons (KCV, on, ICV, Saw, Shaped Saw, Rec, Tri, Sine)

below:
* 2x Noise: Various spectra, four pots (RV, F, CN, WM), 3 jacks (RV, CN, WM)
* 2x LFO controlled type 1 waveforms, four pots (F, Rec, Saw Up, Tri), 3 jacks (Rec, Saw Up, Tri)
* LFO Type 2: variable waveforms, four pots (F, Saw Down, Saw Up, Tri), 3 jacks (Saw Down, Saw Up, Tri)
* Ring Modulator, Poti (out), Jacks (A, B, Out)

Right Box (v.l.n.r.)

above:
* 3x VCF Type 1: (probably 12dB), 6 pots (ES, EV, Octaves, TM, Q, Out), 5 Jacks (TM, ES, EV, 2 Out), 3 switch (LP, BP, HP switchable individually )
* VCF Type 2: Falloff dB switchable, 6,12,18,24, 7 pots / switch (ES, EV, Octaves, TM, Q, out, falloff), a switch (bypass)
* 2x Env: 7 pots (ES, AM, A, D, S, R, gain), 5 phone jacks (Gate, ES, AM, 2 Out), 1 (Gate int / ext)

below:
* 4x ADSR: 4 potentiometers (A, D, S, R), 4 phone jacks (Gate, Trig, 2 Out), 2 (Gate on, Trig on)
* 2x DVCA: 3 pots (ES, AM, gain) 3 jacks (ES, AM, Out)

Matrix / Keyboard
The matrix has 30x30 Ghielmetti contact holes for the pins. 40 brand new original pencils for the Ghielmetti matrix are also included (the matrix alone has some value and brings a lot of fun without a lot of patch cables!)

* Above: VCF 1 2 3 4, ENV 1 2, DVCA 1 2, RM AB, Out LR meter (mini jack), DVCA CV 1 2 ADRS 1 2 per DT RT, VCO CV 1 2 3 4 5, VCF CV 1 2 3 4, empty
* Links. VCO 1 2 3 4 5, VCF 1 2 3 4, RFM, EV 1 2 1 2 DVCA, RM, WM, CN RV Noise 1, noise 2, LFO 1 Saw Tri Rec, LFO 2, 3, ADRS 1 2 3 4 In1/ICV1, In2, ICV 2

Next v.l.n.r:
* ICV1 jack, range pot, ICV2 Kline, Tune Poti, pitch jack, range pot, Bender Wheel
* Summing: 6 In jack for jack 1x Out
* 4 Connection handles multiple
* 4 x switch with two outs (Note 1x cap is missing!, Switch but is still working)
* Footpedal Left Right out with 3 jack, offset and range pot (the Fuspedal itself is no longer found)
* RFM (a kind of filter bank) 4x jack in, 2x Klik out, and three bands each with three pots (F, Q, A)
* 2x input jack in, each one potentiometer, one switch (ICV1)
* Out 1 Left / Right four clinics, each 5 pots (Treb, Mid, Bass, Pan)
* Footpedal diodes Beech 5-pin
* Out1 with pawls L + R, L, R
* Out2 jack
* Out3 Jack L, R respectively Vol Poti
* Power, Fuse, IEC connector, key switch connector (Key not available)
* And of course the keyboard itself!"

Update: this is a Formant modular. Label added.

Update via jbfairlight in the comments: "Is not a Formant... because use many SSM2020, 2030, 2040 and 2050 ;)"