hi i have a sony d-e330 and it has great sound - i have tried 2 do many things with audio files on my computer so that i may get the same great sound as my cd player (even when i put head/ear fonez in) i still dont get the reeli good bass boost there has to be a certain equalizer setting whether its 10 band or 20 band i have also tried to increase the bass by 10db and soundz gr8 but not that good(but the overall volume of the file has to be decresed and can be made loud by the volume knob on the speaker). i even have the NEW AND EXCELLENT MDR-EX90LP earfones which sounds excellent but even better on my cd player my cd player has 2 bass boost levels level 1 is good bass level 2 is stronger bass please post the equalizer setting or the technology information (e.g. srs trusurroundxt etc.) if it is a technology instead and how i may obtain the technology thanx