Well I just did an A/B test with X2 and the Pro Channel vrs my Windows Media Player...I boosted the low and high end just a little bit with the EQ in Pro Channel, and the difference is outstanding !! Music sounds SOOOO much better thru X2 than the Windows Media Player. I can really hear the acoustic bass and drum brushes on a jazz piece that comes with Windows 7 called "Sleep Away". The difference is NOT subtle.
PC really brings the music to life !!!!
Don't believe me, try it yourself. The song is located in your Windows >Libraries> music folder>sample music.