BSPlayer and volume...
 

I used before PowerDVD and now switched to BSPlayer(v.1.3.7). Only negative thing with BSPlayer(not only v.1.3.7!) is low volume level whilst it's on 100% in player! and OS Volume Control is almoust at the end! Is it relative to BSPayer if compare to PowerDVD...?

Did you increase volume of Preamp in BSPlayer's equalizer?
((Rightclick >) Audio > Equalizer > [preamp])
Otherwise: Audio/Winamp Plugins ? - Official BS.Player forums
:wink:
And - of course - if it is AC3 sound you can increase volume in AC3 filter!!
(with an appropriate media-file loaded reachable through: rightclick > Options > Filters > Advanced)

Re: BSPlayer and volume...
 

AC-3 audio tracks are usually encoded in low volume and/or very high dynamic range. You can use AC3Filter to decode this type of audio. AC3Filter can be tweaked to boost the signal; for start just raise the Master slider.

Look at this post: "Very low volume!".