Packet: there definitely is a difference - for whatever reason, the bluetooth a2dp bitpool is hard-coded to a stupidly low value in most versions of android on the market (including the nexus). Why, I have no idea, but it causes a horrendous audible artifacting with some high frequencies (for example, moderate volume strings are suddenly accompanied by some crackling static-like noise). The only fix I've found for it is to use a mod (Cyanogenmod's latest version has the issue corrected, not sure about others).
If all else is correct, bluetooth audio has enough bandwidth that degradation, even at higher frequencies, should be below audible threshold for even discerning listeners, but there are all-too-often issues such as this one that get in the way, and are often completely unfixable by the consumer...
*edited to correct terminology, it's the bluetooth bitpool that is set low*
Last edited by defiancecp
on Wed Sep 07, 2011 9:02 am, edited 1 time in total.