Fiio BTR1k - new for Nov. 2018, bluetooth adaptor. Use to power wired headphones or earphones and connect wirelessly to your phone or ipad.
Fiio BTR1k focuses on providing better sound quality, sending the sound from the bluetooth chip into a higher performance dac. Compared with just using the bluetooth chip like most adaptors, this provides more output, less distortion and better L/R separation. Very small size, 5cm.