I am using an Exposure XX amp which I have been using since 1992. I need to buy some new speaker cable because I need longer runs in our new house. I contacted my local dealer who is a Naim dealer and he said Naim and Exposure (being of similar design) can only use a particular type of cable ie Naim, Exposure, Linn type construction. If other types are used he said will sound rubbish and possible damage the amplifier. Somthing to to with conductance I think he said? A bit naughty but I bought some secondhand QED X-Tube 400 at a cheap price on ebay. While I don't think there is a massive difference over my existing Linn K400 it does give better seperation of instruments. My only fear is can it be damaging my amp?