SSM2044

Pict from eBay. Here.

The SSM2044 was a popular filter on a chip that was used in everything from a Korg monopoly to a Fairlight. I am getting a couple for a modular project.

If you want to find out more about them check out.
electricdruid's site.

There are a ton of SSM2044 filter chips up on ebay at the moment and the prices keep going up. They stoped making them in the late 90's.

This guy is selling 4 for $13 bucks. I just scored a few. Check it out here.