I use Raycon E25 headphones. Pairing is usually fairly easy. You hold down the red button until the blue light starts flashing, which turns off after pairing. I need to make sure the bluetooth is off on my phone or the headphones will connect to the phone instead. I've had a few instances where the connection between my headphones and the adapter dropped for no apparent reason, or they were still connected but the audio dropped. I had to go through the pairing process again to fix the problem. I experience an audio delay of about half a second, which is annoying but tolerable. However, if I were playing a game that I depended on for any audio cues, it would be impossible to play. This device is quite small and completely unobtrusive in both portable and docked modes.