High-end wired earbuds (in ear headphones) cost several hundred of dollars, but we haven’t seen a steady move of these earbuds to Bluetooth. There are a few reasons.
Bluetooth tech hasn’t made a break-through about the sound quality. Bluetooth sound are supposed to be for active personalities rather than for audiophiles
High-end earbuds’s reproduce really good sound, their sound tends to be at time of the recordings of the song. The audio via Bluetooth goes through compression and reproduction of sound, so it is not original they are just like a bottle neck, making the sound less real.
The audio data goes through a process, in which they are compressed and later decode by Bluetooth receiver, a module of Bluetooth earbuds. And the audio data is never the same, some data is lost.
If $200 earbuds go Bluetooth, they wound sound like a $100 earbuds or less. For example, take a look at Shure SE215 using Bluetooth cable Shure RMCE-BT1 Bluetooth and the wire connector. The sound perspective tells a wholly different story.
Not everyone like to re-charge their Bluetooth earbuds
Even the longest lasting battery of Bluetooth earbuds is up to 20 hours. We till have to re-charge it and over years the battery won’t hold charge and you have to get rid of your expensive earbuds. If you stick to wired model they would last up to 5 years or more, that is a worth investment.
Last year Beyerdynamic released the Xelento Wireless, the Bluetooth version of in-ear Xelento. This is probably the most expensive Bluetooth earbuds, hovering at approximately $1200. The Xelento Wireless feature Bluetooth with AptX HD and drivers Tesla. They are lightweight and comfortable to wear but the battery is just 6 hours.