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> I think most of the magic is Bluetooth 5.

Doubt so, Bluetooth 5 doesn't really do anything with audio streaming. Check this out: https://habr.com/en/post/456182/, in particular:

> Only one change affected the Classic version within the specification of Bluetooth 5: support for the Slot Availability Mask (SAM) technology, designed to improve radio frequency sharing. All other changes affect only Bluetooth LE (the same applies to Higher Output Power too).

> All audio devices use only Bluetooth Classic. Headphones and speakers cannot be connected via Bluetooth Low Energy. There is no standard for transmitting audio using LE. The A2DP standard, used to transmit high-quality audio, works only through Bluetooth Classic, and there is no equivalent in LE.

> To sum up: buying audio devices with Bluetooth 5 only because of the new version of the protocol is meaningless. Bluetooth 4.0/4.1/4.2 in the context of audio transmission will work the same way.

> If the announcement of the new headphone mentions a doubled radius and reduced power consumption thanks to Bluetooth 5, then you should know that they either do not understand themselves or mislead you. No wonder, even the manufacturers of Bluetooth chips confuse the difference in both standards, and some Bluetooth 5 chips support the fifth version only for LE, and use 4.2 for Classic.




I haven't followed the specs closely. My grievances with bluetooth weren't around audio quality. They were all around pairing, battery life, reliability during use, and how annoying and frustrating general use was. Maybe this all came from 4.2 and a combination of other tech like available chips or better implementation? For whatever reason, not long after AirPods were released I hear competing headphones improved significantly. I know often can take years and suddenly someone comes along with a clever design pattern everyone else implements on top of old hardware or existing specs.




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