Tell me why you think that. Oh, and consider that the developers disagree with you,pinktank said:foobar has better reproduction than winamp, winamp has good sound prod if u use output plugins which will give you floating 64 bit reprod .
http://www.foobar2000.org/FAQ.html#FAQ_o7
Does foobar2000 sound better than other players?
No. Most of "sound quality differences" people "hear" are placebo effect (at least with real music), as actual differences in produced sound data are below their noise floor (1 or 2 last bits in 16bit samples). Foobar2000 has sound processing features such as software resampling or 24bit output on new high-end soundcards, but most of other mainstream players are capable of doing the same by now.