AS3320 / CEM3320 filter adaptation

The Pro VCF is a faithful adaptation of a well-known 4-pole synthesizer filter in Eurorack.
The core of this design lies an Alfa AS3320 filter chip based on the original Curtis.
Countless synthesizers used the 3320: Sequential Pro One, Prophet 5 rev 3, Drumtraks, Crumar Trilogy, Stratus, Elka Synthex, some Fairlight CMI, Linndrum, Oberheim OB-8, OB-Xa, PPG Wave 2
At full resonance the Pro VCF can self-oscillate.

FEATURES
- Two selectable filter slopes: original 24 db/oct, and 12 db/oct.
- Two voltage controlled input jacks for frequency CUTOFF w/ signal attenuators.
- A voltage controlled input jack for RESONANCE w/ a signal attenuator.
- Two signal input jacks w/ individual attenuators. At full clockwise, these inputs can overdrive the filter from most eurorack oscillators and audio sources.

Available the week of July 29, 2019
Be sure to check out my other cool Eurorack modules available in my Reverb store http://reverb.com/shop/gstormelectro

• 10 mA +12V
• 11 mA -12V
• 0 mA 5V
• 22 mm Depth

This Module is currently available.