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256kbps Wired vs. 320kbps Streaming

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Question on car audio:


What would be considered better SQ: a 256kbps track being played through a wired interface (iPod classic via USB) or a 320kbps track streaming (via Spotify or Rdio) from my phone?


To my ears, the 256 wired track sounds better but I don't know if the 320 track is losing quality in the bluetooth streaming process. Although I'm comfortable with my opinion, I'm looking for some sort of empirical evidence to either support or dispute my unscientific opinion.



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One thing is that 256kbps AAC may be as good as 320kbps MP3 or OGG.


In addition, your phone may be having to transcode before sending via Bluetooth (depending what combination of devices and what is supported).



...in my opinion / experience...

While I agree "Everything may matter" working out what actually affects the sound is a trickier thing.

And I agree "Trust your ears" but equally don't allow them to fool you - trust them with a bit of skepticism.

keep your mind open... But mind your brain doesn't fall out.

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