External hard drives and sound quality


I've just about filled up the internal hard drive on my Macbook with music files and am now looking at external hard drive options. Was wondering whether folks report any difference in sound quality when playing files from an external drive versus the internal?

I'm especially interested in hearing people's experiences using wireless hard drives. An Apple rep told me it would be no problem, as the hard drive wouldn't directly interface with the USB output, but I of course always like to be skeptical of anything an Apple rep says.
coverto

Live and learn I suppose. The wireless security precautions seem to have eliminated that nonsense.
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It depends mainly on the software you are using for playback, using external hd's with a good music playing software is very effective and i dont hear differences between.
Really depends on the resolution ability of your system the audio signal is going through.

On many systems, you wont hear a difference. On a high res. system, a NAS has a less darker background than a spinning HD, which is not as quiet as a solid state HD.
"On many systems, you wont hear a difference. On a high res. system, a NAS has a less darker background than a spinning HD, which is not as quiet as a solid state HD."

Sorry, not to be rude, but that's total crap. If you can read/write data to the device without corruption, how can music files retrieved sound different (all other things being equal) depending on the back end storage type?