had a quick chat with ardvark audio this morning. very nice guy. the up shot being the difference between a gen II and mine is slender and given mine is late ebo 4 1 it might well be gen 11 anyWAY. anyway the blue cap upgrade is worth doing but is cheap as chips (40/50 ukp plus carriage).They do it. He mentioned a decent mains cable would be good though - any suggestions John