When they make bluetooth earbuds that have same quality sound as Etymotic ER4's, I'll switch then... the likelihood of that happening is virtually nil.
Yep, I'm with you. I use Shure SE846 earbuds, and even though the dongle supposedly uses a DAC chip identical to the DAC in the iPhone 6, the audio is noticeably flatter and less enjoyable. Since the chip is the same, I figure it must be either the amplifier (haven't read whether that's the same) or the bit of super thin cable between the chip and the headphone port. It was a downgrade from the iPhone 6.
If you're looking for the best quality, aren't you better off using a USB DAC than using even the wired headphone jack with the phone's DAC that was chosen more for its size and power usage than quality?
