Universal Audio has just released two pieces of classic API hardware as plug-in emulations for the UA platform. Both the 550A and 560 EQ's are mainstays of the recording world and are among the most popular 500 series products sold in hardware form. A number of engineers, mixers and industry pro's have given these pieces their blessing, as the process developed through the design, prototype, and beta stages. More info here:

http://www.uaudio.com/store/equalizers/api-500-series-eq-collection.html