panerai557 OPCan't find much measured info on those speakers, if they are true 4ohm you should be fine with the 30.8, because it gives 60w out then.
Do you think Pass Labs XA30.8 has enough power to drive 86 dBL Dynaudio focus 380 speaker well?
But if the speaker is more 8ohm with just a dip to 4ohms, the the 30.8 is only going to give 30w. Which at 86db may not be enough to go loud enough for you.
Cheers George