Firstly unreserved apologies for rubbish title! Having read in WHF mag that my Monitor Audio RX1s will benefit from 2 sets of wires each (also recommended by MA themselves), I've given it a try. 2 sets of standard QED 79 strand into Marantz PM66 KI Sig. Fired up and first impressions are positive. Literally had only 5 mins but am sure certain aspects of sound have improved e.g. better instrument separation and what I perceive as quicker or more pronounced decay and start of notes. Am quite surprised initially, but will post again when had chance to listen for longer (and louder). Thanks for reading folks.