I hinted a bit in the Andromeda thread that I had found a workable wireless solution so I figured I'd start a new thread. For a while, @CEE TEE, @Marvey and I have been going back and forth about random wireless headphones. I've tried many, many solutions from the days before even apt-x was out in the wild. I've tried everything from headphones like the air-fi matrix af62, jaybirds, ATH-WS99BT, Sennheiser M2AEBT and Philips M2BT the to dongles like the noble bts, audio technica AT-PHA50BT and the iriver XB10. They've all sucked. Fast forward to a few months ago when, working with Sony, I noticed they contributed LDAC to AOSP for Android O: https://www.theverge.com/2017/3/21/15004562/sony-google-android-o-ldac-wireless-music Holy crap. A reasonably high bitrate codec over bluetooth? Potential near ubiquity with the next Android release? No forced licensing from Qualcomm or others? SIGN ME UP! And so I went down the path of LDAC headphones. It turns out there's pretty much no choice currently. The "best" that some members her recommend (MDR-1000X) is just okay, but nothing that convinced me to stop carrying even something like the noble X around. A few weeks back, during another bout of obsessive searching for an LDAC dongle, I ran across this. The "XBA Series Bluetooth Upgrade" or MUC-M2BT1 (I know, such simple naming...) is an MMCX terminated LDAC adapter for Sony headphones. Wellllll, I have some MMCX terminated headphones I love, my Campfire Andromedas. So I ordered the dongle from Amazon Japan, it arrived in 3 days and I immediately was excited about the sound: It sounded pretty good! Is it as good as balanced out of the ZX2? No. Is it better than the HP out of my phones? Yes!!! And, as a bonus, quiet as all hell. That's right, those of you sensitive to hiss will be satisfied. Now, why did it take me a few weeks to post this? Well, without a cable guide, it's an extremely awkward combo. Also, the Andromedas bang around in the supplied pouch. Luckily, I'm crazy and bought a bunch of ear hooks and storage solutions to try out. Here are some failed hooks for your enjoyment: So where did I land? The most comfortable and (more importantly) the only damn ear hooks to stay on are the V-Moda Sport Earhooks As for the case, these things are super awkward and it's really challenging to find a ~8"x7"x1.5" hard case. HOWEVER, @shotgunshane thankfully reminded me of the leather pouch that came with his Ibasso IT03. I didn't have one on hand but I found an old monster turbine case in my collection ($10 on ebay) and now my Andromedas are protected (I can put the whole thing in the pouch now): Here I am, a convert. I am using music on my ZX2, my Sony Xperia X compact and streaming services on my Pixel XL running the developer preview of Android O and I am a happy camper. Now for the caveats: You're not using this on long overseas flights. I'm getting around 6-7 hours of battery life and it takes about 2 to charge it back up You still look like you're rocking neckbuds. I've been wearing darker shirts to look less doofy: It's not lossless. Sounds good to me, though. Redbook is not noticeably compressed.