This is a great Yamaha AN 200 VA Desktop Synthesizer w Drum Machine. Features Yamaha's AN Virtual Analog Modeling Synth Engine . Still has the PLG150 AN Installed. Lots of knobs for sound design and performance. All Knobs and buttons work. Fully Functional. Includes Hard Aluminum Zero Halliburton Case and Soft case within for added protection. Used in a smoke free studio and stored in climate controlled environment when not in use.