This is the most recent edition with the more streamlined enclosure. The Markbass Compressore is one of my favorites capable of imparting a hint of tubey goodness. I've been doing quite a lot of compressor comparisons and reviews lately and you can see my thoughts on the Markbass here: Testing Compressors: Cali, Smoothie, Empress, Diamond, Keeley, FEA, Darkglass, Doc Lloyd, JHS & more Killer compressor that is extremely versatile and just flat out sounds awesome. You get control of all the critical aspects of compression and a threshold LED. Real tube inside for that added tone enhancement. Comes with box and power adapter. Compressore is excellent condition. Velcro on bottom that can be removed if you'd like. $160 shipped CONUS.