Summary: I was looking for a new keyboard amp setup and these were highly recommended by everyone I spoke to. No one had any complaints and after trying them, I can tell you I see why. You can't go wrong with them for keys. Keyboards amps can't even come close. It's a matter of preference, but it came down to one of these and the JBLPRX612M. In the end, I liked the tighter bass of the JBL and the sound of my Yamaha pianos thru it.
Summary: My main concern was with the supplied mains cables fitted with American IEC and Euro style plugs onto 110Volt rated cable. Andertons are looking into this so I expect the situation has been resolved by now. A standard U.K moulded 13A/Euro plug cable can be used anyway. I'm looking at a further 2 x K12's as stage monitors, their cabinets are shaped for this purpose as well. Highly recommended!