via this auction
"OLD SCHOOL SYNTH KEYBOARD - TOTALLY RADICAL The main panel features:
- 10 switch tabs and 18 potentiometer sliders.
Back panel terminal connectors:
- out at low impedance
- out at high impedance
- cv interface control
- CV filter control.
STRUCTURE: VCO oscillator can be modified with these functions:
- octaves sekector 64' / 32' / 16' / 8' / 4' + 1 sub bass bottom (down to low 0.3 Hz)
- saw or square (sadly no variable width) waveforms
- tuning the VCO pitch.
ENVELOPE 2 interchangeable EGs:
1- EG VCA: 2 segments
2- EG VCF: 2 segments.
VCA also offers 3 preset curves for sustain and release named "organ" and "slow".
FILTER multimode analog resonant filter:
1- lowpass: range: 16 Hz- to 2 0kHz at -24 dB per octave
2- highpass: range 10 Hz to 16 kHz.
LFO single delayed oscillator (shapes: saw, triangle and square) and 3 destinations:
1- VCO pitch
2- VCA amplitude
3- VCF filter cutoff.
NOTE: Only the the items photographed are included in the sale.
NOTE: One of the keys springs is faulty and I have stuck some tape onto it to stop if from actuating constantly - I could never locate the parts to fix it, the item is old and fully functions other than the key the pots for the knobs are a little dirty when adjusting, My Dad bought this in the 70s and passed it onto me."
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