True. I know we are seeing more class D stuff do this now. Other topologies were doing it a little earlier I think. If you don't mind carrying it you can always take a out off these heads to an old crown power amp or something and do 2ohm all day long with insane power.Thanks for the explanation. I think we often take it for granted that a number of amps can now do 2 ohm stable, when it’s actually a considerable challenge to design something that works that close to a short!