Ian what sort of sound are you after, cables can also affect the quality of sound, they make a difference to, my marantz amp a pm66se died on me, so i bought a roksan kandy mk3 amp. The sound of the kandy, is very detailed and muscular, my old amp was also detailed but ran out of grunt, Amplifier technology have moved quite a bit, manufacturers are now focusing on components that dont influence the sound, ideally you need a amp which is neutral, thats why you get marantz with their ki series i also suggest you change your speakers too they are also a window to music