Appreciate all the comments... but unfortunately I cannot afford most of these options....

I'm finding that a song will sound 'decent' - (not thin) when played thru BIAB, but when I play the same song after rendering it to a WAV file - it sounds WAY different (thin & trebly)....
This did not happen with my 10 year old PC w/SB LIVE!...
Any thoughts as to why the rendering does this?