CSR was recently purchased by Qualcomm, the mobile phone semiconductor giant, and they will likely make the Aptx stack part of their mobile phone chip offering to enhance their position in the market. According to MS tech support, you can have. You’ve mentioned that Aptx works well with some mobile phones. I can re-enable the built-in BT later to get to the supported profiles. If you have iTunes, try videos there. Mobile phones are the BT source, just like your laptop.

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Azio USB Micro Bluetooth Adapter V4.0 EDR and aptX (BTD-V401)

I only have one source for my Aptx, the Azio dongle. I think you ran into similar roadblocks at CSR when you asked questions.

Wzio manufacturers are not known for being innovative. Even with Apt-X there will be approximately msec delay, but most people would agree this is pretty good.

However, the trend btd-401 the future is to make PC’s, Ultrabooks and tablets, totally wireless with USB the only connector to the outside world except for the power cable to charge the battery.

Hope this helps you better understand the black magic of wireless audio. I have to trust that they have Aptx. Thank you for understanding. WIth a mobile phone is easy. But Sennheiser at least is a name and if you have problems gives support. I do not think we can really think like that about notebooks manufacturers.


Hi Giogio, you have asked several questions.

Azio USB Bluetooth Adapter, BTD-V, supporting aptX, US$ (shipped) @ Amazon – OzBargain

If you have iTunes, try videos there. Aptx is not a standard, just a good economical product for wireless stereo. And besides this mystery of Beats, there is the mystery of Apple. Dismiss Notice We are currently updating the search index, and it will be temporarily unavailable for a couple of hours while bbtd-v401 is in process.

So, SQ and lip-synch are excellent, even without Aptx. Class-D, if your mouse is btd-g401 Bluetooth, your example makes no sense. Apple PC’s already have Aptx.

I think Logitech makes several.

What are head-fi members views on apt-x lossless codec (over bluetooth)?

I don’t think Dr. Post 95 of I admire your patience with radio devices. In my opinion, much better than iTunes AAC. Share This Page Tweet.

Post of Everyone would agree that Azio and CSR support are non-existent or poor at best. They may work well or they may be slow and buggy. There are approximately 20 different profiles in the BT spec.


Of course they would make us all a favour us, who know what music is like, with Aptx, or with AAC, or with Airplay, etc. I am now convinced that your Logitech SetPoint drivers conflict with the memory space of the Azio dongle. This would be the case if the BT micro in your PC is cheap and slow.

Plus, something for iPhone owners: Azii on the HK Onyx can be found here: Headphone Reviews and Discussion – Head-Fi. If you have trouble installing the CSR Harmony software that comes with Azio dongle, go to their website and read the note on Microsoft. Perhaps your BT headphones will pair up with your PC.