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Any lossless audio Bluetooth?

post #1 of 4
Thread Starter 

New as I am to high-quality audio, I only recently learned that Bluetooth is a digital transmission method, which raises the question...

 

Is there a version of Bluetooth that is truly lossless for audio signals?

 

The closest I have heard of is the AptX (now for reasons I don't understand written Apt-X).  Bluetooth seems to be a way to get to the digital output of the iPod source (as a way of "decoding" the 8-pin Lightening Connector, which also presents digital audio in some way).

 

However, Steve Guttenberg of CNET posts that even the high-end $700 NAD VISO 1 Bluetooth speaker dock for iPods and iPhones evidences a quality degradation from wired connections, suggesting that its Bluetooth audio is subjected to lossy compression.

 

I also see the moniker A2DP associated with Bluetooth, causing me to wonder if that is similar to, different from, or orthogonal with the Apt (-X).

 

Thanks for any insight.

post #2 of 4
Thread Starter 

Stumped the geniuses with that one, I think!

post #3 of 4

Hm, aside from the problems of compression with bluetooth, there's also questions concerning the quality of the dac that is built into the device that is receiving the bluetooth signal.

 

I believe the biggest concern with most audiophiles is that there is no control of what dac they can use with a wireless device. With a completely wired setup, one has complete control over the dac and amp so there are less variables out of the way when audio quality is concerned.

 

As far having an amplifier with your wireless setup however, there are devices that act as a bluetooth receiver in which you plug into a headphone or speaker via auxiliary cable. I believe it's completely possible to fit an amplifier (but not a dac) in between these receivers. Of course these receivers themselves have built in dacs as well so the audio quality is most likely questionable as well.

 

If the bluetooth signal was non compressed, the only way to get the desired audio quality would be to actually dismantle the device that retrieved the signal and replace it's dac with something desirable.

 

Either that, or I have no idea what I'm talking about lol.

post #4 of 4
Thread Starter 
Quote:
Originally Posted by Semont View Post
 

Hm, aside from the problems of compression with bluetooth, there's also questions concerning the quality of the dac that is built into the device that is receiving the bluetooth signal.

 

Semont, you have given me a new piece of education... the fact that indeed one must worry about the DAC on the receiving end of the bluetooth.  That is not something that occurred to me... thanks!!

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