Analogue Modular Synthesizer Dual VCF BY SMS

via this auction

"Dual Voltage Controlled Filter by Synthetic Music Systems.

Perfect cosmetic and performance condition.

Two independent Voltage Controlled Filters in a single 1u 19" rack space.

The unit has its own built in PSU and is switchable 230/115 AC.

Directly compatible with all classic and modern synthesizers using the industry standard 1V/OCT 3.5 mm patching system.

VCF 1 is the classic 24 db/Octave Low Pass Transistor Ladder Filter based on the awesome design by the great Bob Moog.
Silky smooth and very natural but very electronic at high Res settings.

VCF 2 is another classic 12db/Octave Multi Mode Filter designed around Dual Transconductors with simultaneous Low High Band and Notch outputs.

Each VCF has a dedicated 1V/OCT input, bi-polar input for frequency modulation and two audio inputs.

[the seller] will be listing further SMS equipment Dual VCO Dual Envelope Multi Module Complete 5 Module System MARS PLANET 7 System."