For what it's worth... I have the KEF LS50s with: Marantz PM15s2 amplifier and Marantz SA15s2 SACD player (which I use in DAC mode). I use a custom DC filter, Ecosse MS 5.5 Bi-wire speaker cables, and Ecosse 'the composer' interconnects. Speakers are on Iso Acoustics Aperta AP155 Speaker...