...and tried it with my Sennheisers (HD800, 600 & 280 Pro). Nice! For studio work I insert it in Cubase virtual studio chain (on the headphone side and ARC2 on the speaker chain). For casual listening I use JRiver Media Center's DSP tool. I also insert Izotope Ozone 7 Advanced for more control.
For those of you wondering how to insert a VST in your PC listening chain regardless of the software used you should check into virtual cables such as DDMF Virtual Audio Stream
http://ddmf.eu/virtual-audio-stream/ or read the following blog and comments :