Yesterday I conducted a maximum volume test of
- Beoplay A8
- JBL Authentics L8 (rated 120 Watts RMS and 104db SPL)
- Bose Sounddock 10
and recorded it, so you can enjoy the result.

The recording was made outside the room in which they played, with the door closed, my Olympus LS-12 recorder right behind the door. Sound source was the BK-7m at 60% volume playing a rock style.
Of the three, the JBL L8 has the lowest SPL (!), however a good bass. The Sounddock 10 is BY FAR the loudest of the three.