I just got a 2nd pair of SE846's for use with my Fiio BTR3 and short cable leaving my other set with premium cable. It came with the Shure BT1. What can I say...... absolute garbage sound via SBC plus the loud hiss. My old Samsung H3000 aptx adapter even sounds better. Do yourselves a favour and get a BTR3. Sounds nearly as good as wired when using LDAC. Got my BTR3 new for ~£50 and has 10hr+ battery life.