Airport Express wav file vs CD played thru iTunes


I just bought an Airport Express and have it connected to my Primaluna integrated without using an external DAC (for the time being).

When I stream a wav file from iTunes the sound quality is noticeably worse than the same track played on a CD through iTunes. The wav file sounds compressed and very muffled. I would expect the quality to be equal to the CD. I only did this as a test and don't expect to play CDs through iTunes on my laptop streaming to the AE.

Will an external DAC "correct" this problem? Or is the wav file encoder for iTunes the issue? Or maybe something else entirely?
arm

Showing 3 responses by audioengr

ARM - If you believe that a DAC is the solution to eliminate jitter, then you need more experience with DAC's. I get to hear a LOT of DAC's in my profession. They ALL need jitter reduction IMO.

Steve N.
Edo_musica - the CD is usually played directly from the laptop to a DAC, not through the AE.
The difference is jitter. The stock AE has very bad jitter compared to a decent CD player or even a computer playing a CD. A reclocker can bring the performance of the AE beyond that of a good transport or CD player. Most audiophiles that are getting stellar results from Squeezebox, Sonos and AE are using a reclocker after it.

If you dont understand jitter, then read these papers:
http://www.positive-feedback.com/Issue22/nugent.htm
http://www.positive-feedback.com/Issue14/spdif.htm

Steve N.
Empirical Audio