OBERKONN

via this auction
Click here and scroll for some prior posts featuring the OBERKONN including video.

Details:
"industrial VCF I call an OBERKONN. This is a very distinct vcf in which I focused on Sine Oscillation as it's main character.
Every input on the VCF has a big range. In otherwords you don't simply turn the knobs all the way up otherwise you will have crazy big big sound! This big sound only applies to Analog VCO signals. On Line level it will only bring it to Synth level, it will not push it as hard.You can either dial in clean or head into hard fat saturation (synth signals).
The Filter will self Resonate into a clean Sine Wave. As you go up the Sine Wave pushes harder and harder.

The panel is made of plexiglass and Actual Color is Yellow. The knobs are soft touch grey and green in color.
The jacks are switchcraft high quality 1/4 inch jacks.
The box is a blue Utility box, so the unit is lite weight. When you see it in person you think Lego.

THE FILTER IS NOT SEM OR CEM BASED. IT IS BASED ON DISCREET PARTS AND THE GOOD OLD LM13700. I LIKE THIS BETTER!


The filter is a 12db Variable state filter that offers LP, BP, HP outputs.
These are the features of the FILTER side:
-offers LP/BP/HP outputs
-has a bi-polar FM input
-has a normal cv attenuator
-has (2) audio inputs, there are (2) pre-amp trimmers inside the unit (i have them set to about 85%)
-has a Rez CV input with attenuator

The Audio inputs were intended for Analog VCO's. You can input Line level Sources but to achive the best Signal to noise ratio I recommend to use a Pre-amp to boost your signal. There are onboard
Pre-amps on the unit but they are not the cleanest or studio quality like your A&H mixer. Those onboard Preamps Fatten Analog Synth Signals(WAVE FOLDING!!), but on line level they only bring up the volume.
Out of the VCF's I have sold, this is a CLean sounding filter. Harsh is not it's main character.

Compared to the Steiner or LM4250 VCF, you can hear exactly when the Sine wave Whistle Begins."