Bugera 6260 infinium ultimate rock tone valve amp head bugera 6260inf bugera 6260 infinium ultimate rock tone valve amp head br the 6260 head and 6260 212 were designed to achieve the tone of a high power super lead amp and provide it with all the virile crunch it takes to detonate the centre stage with 6l6s this design has a very open and glassy tone with el34s it takes on a more compressed and noticeably midrange character bugera 6260 infinium ultimate rock tone valve amp head