Folks, the new 2007 G35 HD player (musicbox) supports playing MP3 music files, however does anybody know if the new 2007 G35 HD player can play mp4 aka m4a i.e. aac encoded music files ? I'm about to extract my CD collection & I prefer mp4 for its higher sound quality at low-medium bit rates i.e. smaller file size.

After conducting online research & performing numerous track tests on my medium end consumer home audio equipment (Yamaha amp & JBL ND310 speakers), I've come to the following conclusion for files extracted from CDs only (could be different if directly extracting from a digital studio master):

1. 128k mp4 == 192k mp3
2. 160k mp4 == 224k mp3 (better than 1. & very difficlut to distinguish from the original track on a CD)

mp4 seemed to have lost its quality/size advantage at bitrates above 160k. Also concluded that 192k mp4 & 256k mp3 were not audibly distinguishable from 160k mp4 & 224k mp3, while, 320k mp4 & mp3 may have been marginally better & that was rare & very hard to detect (and only in certian sections of certain tracks).

Thus I'd like to go with 160k mp4 instead of 224k mp3 if I can, for the 30% smaller file for equivalent quality.

PS. Don't want this debate to be about audio quality of mp4 vs mp3, just want to know if G35 HD player can play mp4 otherwise I'll extract mp3 files at 224k . Also want to know if there's an easy solution to play mp4 files in G35 HD player (assuming it does not).

Foot Note: See attached pic from infiniti's website for info about the "musicbox".

 

This is the first I've heard of an HD player in the 07. I'd love some links to where you found out about this, sounds pretty interesting. I have no idea who would know the answer to your question, are the 07s with this HD player already on the road?

 

The info about the musicbox is on infiniti's website - www.infiniti.com. I've attached a pic (of the musicbox) to my original post for you to ponder on.