SRS Labs is famous with its virtual 3D sound technology. It can be found in home entertainment, mobile devices, cell phones, car audio, headphones and computing. There are 3 SRS solutions for mobile devices ~ TruSurround XT, WOW and WOW HD.

SRS Labs is famous with its virtual 3D sound technology. It can be found in home entertainment, mobile devices, cell phones, car audio, headphones and computing. There are 3 SRS solutions for mobile devices ~ TruSurround XT, WOW and WOW HD.
xda-developers member, Sector` updated his HTC HD2 contribution ~ SRS WOW HD v1.5.1.0 to v2.1.
Version 2.1 changes