not sure if here is the right place to ask
i was using flac with 1000kbps +- with my sony phone.
now i changed to iphone, and i use m4a with 500kbps+- format.
i insert the flac and m4a song into my sony and i cant really tell the different. but after i googled, found out that m4a is a container and flac is a container + codec ? what is that mean?
so far im not using any dac/amp yet. if after i attached dac/amp, can we tell the different in term of the audio quality?
[UPDATED 11/17/05]Headphone FAQ, read this, check it, before you buy one.