I was mostly discussing the V20 DAC so I thought I was on topic.
LDAC is Sony's proprietary CODEC and you can't use it on the V20 unless you have OREO as far I can tell.
As a former sound engineer I've worked with live and studio musicians so I've been around the block a few times when it comes to headphones. I don't agree with Bluetooth sounding as good as wired and you don't have to spend big bucks. Maybe if you are listening to low quality files it's harder to tell the difference but if you listen to higher quality files especially lossless there is a tremendous difference between Bluetooth and wired.
I totally agree with you saying you don't have to spend big bucks. What I am saying is with your V20 and a decent pair of Bluetooth headphones that use AptX HD and the music encoded at a minimum of 256kbps at 41k/htz you won't hear a big enough difference to justify a wired set of headphones.
I know. I've done the research.
Do the wired ones sound better? Maybe a little.
Go and buy a set of headphones that are made to utilize the phone's technology. Like a set of Tone Infinium HBS 900's made by LG at the very least. I had a set and for wireless headphones they were awesome.
Don't get me wrong. I would never question your sound experience. It's just that I've probably bought at least thirteen sets of wireless cans since I had those to try and get a good enough sound to match my wired AKG 240's. (Yes, they are older but still awesome.)
I still use wired headphones from time to time. Always when I'm performing. But for just daily listening I've got the wireless thing to where they sound pretty darn good. Almost as good as my Shure 315's.
I'll say it one more time...
No one does smartphone audio like LG. Nobody! At least I've not heard anything better yet.
If you would like some factual information about sound compression I have some great stuff to read. I could send you a link.