Elaborate usability, but he supports no 4ohm speaker, is in connection with these extremely fast very hot and then shuts down (at high levels) .If the Preiß manufacturers should take into account the most 4 Ohmen in Germany Lautschprecher in circulation. Unfortunately, currently the Onkio from the 636 the only ones to be switched on 4ohmen können.Lautschprecherhersteller as Nubert and devil always claim that it is not a problem that hits but only if you live in rent and anyway not very listening to loud music kann.Wenn But anyone listening from PC via optical cable, it is the limits of 5008 to quickly familiarize yourself.