Default Bass on Sansa Fuze V2 (v3.12) is too deep?

[RakemYst]

I'm trying to listen to a binaural beat (brain entrainment program) called LifeFlow and for some reason the default bass on rockbox makes the sound of crackling-bass, like WAY too loud/high, so I have to turn the bass down to -10db but it doesn't sound the same as the default firmware, or just playing it from my headphones on my PC. Any setting I need to know about to make it sound right again?

[saratoga]

The default settings are a perfectly flat spectrum. 

[RakemYst]

That may be true, but it *sounds* like there is some sort of filter on that is totally fucking up the sound, and when I turn the bass down, the bass is completely drowned out from it's original sound. I know there's a billion options in RockBox, but is there some sort of filter I need to be turning on or off to make it sound right again?

[saratoga]

If you aren't sure what you changed you can reset the settings. Otherwise you don't need to do anything.

[RakemYst]

I hate to say this, but what i'm trying to say, is it's happening on default settings. I'm trying to know if I can change one of the many sound options, and why it's happening, to make it sound more clear/normal at default settings, otherwise I have to turn the bass down, which then makes what i'm trying to listen to less clear/abundant (audiophile wise), and this is on a 'brain entrainment' program which needs to be clear as air to work correctly. It sounds much deeper/clearer on default settings on my PC, and standard firmware for my Fuze, even though i upgraded to rockbox so I could listen to FLAC and plus I love your project/opensource/etc. Any ideas?! Props...

[AlexP]

I haven't tried any brain training thing, but it sounds just fine to me on normal settings.  It'd be useful if you could compare the output of Rockbox and the OF to show that there is a difference (using RMAA or the like).