MegaSack DRAW - This year's winner is user - rgwb
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A lot of them can receive bluetooth but not many seem to be able to transmit to bluetooth headphones
Presumably there is a reason for this? I don't really want to use my phone
Just get a transmitter to plug in to the headphone port (if it has one)?
https://www.amazon.co.uk/Sennheiser-Bluetooth-Audio-Transmitter-Entertainment-Black/dp/B07DX362VS/
I would think that the BT transmitter would be transmitting the original compressed file, then the DAC in your headphones is doing the conversion. So unless you want to manipulate the sound in some way all you would be doing with a headphone adapter is going from digital to analog, and back to digital, transmitting via BT, then back to analog. Might sound different, but better/worse would be very subjective. Spotify played through a valve amplifier then converted back to digital, might sound different to the original, but then you're arguing whether foibles of a particular amplifier are better/worse/matched/mismatched with the original recording (and you're still adding the DAC and amplifier built into the headphones on top of that).
What sort of system/device? Like a streamer?
I've had a bit of fun with a Raspberry Pi running Volumio. I use it with Tidal plus my own music library.
Volumio has a Bluetooth plugin. Never tried it though, as my headphones are wired.
I use a Trond transmitter from Amazon, about the size of a matchbox but half as thick. Sound quality is very good and it plugs into a headphone socket. Comes with different connector adaptors and was only £25 can also act as a receiver.
I think the hifi industry assumes two types of headphone users. People listening to music on the go, using their phone or some other portable device beaming the audio direct to the Bluetooth headphones. Or the traditional hifi person listening in their home with wired headphones. There are a few high end wireless headphones on the market now so I guess just need to wait a bit longer for the manufacturers to catch up.
Lots of Bluetooth transmitters on Amazon and eBay that will pug into the normal headphone socket or preamp out from your amp and covert to Bluetooth for you. I have no idea of the quality of these devices so depending how spendy the Sennheiser is I’d probably go for that.
Slight thread hijack, @Jamze, does the pi support asynchronous usb digital audio out?
I have a DAC with asynchronous USB port and was thinking of converting a pi into a streamer but no idea if it will work. The manual says Macs will work straight away, Windows machines need a driver update but no mention of systems on other OS. Company is in virus shutdown at the mo so I haven’t received any reply when I asked them.
Yamaha MusicCast WXAD-10 can do this, they're about £100.