Sony phones come with two less-known features – xLoud and Bravia engine. The former improves the sound quality of the phone when the music is played via earphones, and the latter improves the screen quality when a user watches a video or an image.

Both these features definitely work, and are not just a gimmick. The Bravia engine was already ported over to the Samsung Galaxy S2, but the difference it made was pretty much unnoticeable.

Now, one member – solidchips – over at Captivate forums has ported Sony’s xLoud as well as Bravia engine to the handset. While quite a few users who tried the update reported a noticeable improvement in the sound quality, the difference brought about by the Bravia engine was barely visible.

The mods work on Gingerbread as well as Ice Cream Sandwich based custom ROMs, but some users have reported incompatibility issues with some ROMs. Thankfully, the developer has also provided a CWM flashable zip file, which can remove these mods, if a user wants to remove them.

Interested Captivate owners can download the xLoud and Sony’s Bravia engine flashable zip files from here.