Korg MS-20 early version inspired Filter. Black panel
http://www.befaco.org/en/bf-22/
If you had an Unicorn Account you could see a chart with the price development of this module and the average price asked for this module.
Befaco Sallen Key Filter BF-22 in close to perfect aesthetic conditions and perfect build (built from kit).
White panel.
Paypal. Add 3.4% if you'd like buyer's protection. If you want to save on this, you can verify my transactions on MW.
Will ship in generic box. This was a kit. Includes 4 screws and power cable.
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