Bluetooth Speakers and Headphones

[Javier Gerardo]

Reduces quality, depending on what codec is used. Wifi has more bandwidth - haven't read but I'm assuming DLNA and similar have (little to) no added compression. 

For bluetooth, there is a baseline mandatory codec which is something like... googling...192-320kbps. Then, if your source and headphones support it, you can have better codecs e.g. AptX or AptX HD. The former of those is "CD quality". So you see that there is compression involved, more or less, so something from the audio file is left out. With wires, there is no compression. I suppose you could even get multiple compressions if some internal system would have to change from a format to another.

You asked about sub effectiveness, but that's hard to measure. You'll be relying on forum member reports, or just uttry it out for a while with BT headphones and try to get a sense of whether it's working better or worse.

Thanks for giving your input. It looks like I still have to stick with wired earphones and speakers for full sub effectiveness.