Waves API Collection Native - Authorized by API Developed in association with Automated Processes Incorporated, the API Collection features four precision processors based on renowned API modules: the 550A 3-Band Equalizer, the 550B 4-Band Equalizer, the 560 Graphic Equalizer, and the 2500 Stereo Compressor. Used by engineers worldwide on countless hit records, these modules deliver a sound like no other. And with the API Collection, Waves captures every nuance of their unique sonic signatures. Including: 550A 3-Band Equalizer 550B 4-Band Equalizer 560 Graphic Equalizer 2500 Stereo Compressor. Type: Audio Plug in Specifications: iLok USB Key needed - VST, AU or RTAS Host Height: 10" Width: 8" Depth: 3" Weight: 1