I have it pushing a pair of 6" speakers and it works well.

This thing is great pairs fast & easy and very loud

adapter I had laying around with no problems.-- Negatives1: Audio has a noticeable scratchy sound, as well I can hear audible pulses in the background when it's not playing audio.----Soldering a small length of copper wire, solid or twisted pair on the Bluetooth antenna gets rid of both the pulses and scratchy sound.2