Oh dear, my purchase has opened up a "Cans of Worms".
Installed M Explorer this evening and have been round the world on the radio and an old pair of Panasonic RP-HG20 headphones I had long forgotten. These were a managers clearance bargain at Scottish Power 10 years ago for �10.
Staggering performance. IMO better than the B&W P5 (I think) previously auditioned.

This prompts the question and probably a new thread re recommended headphones to go M Exploring with?
Comments and opinions would be much appreciated
Hector

AV: Thorens TD160B, SME, ShureV15MK2, 500, 598, 861v4, DSP7200.1, DSP3300HC Samsung UE55, SkyHD.
DINING: MS600, AC200, DSP5200SEUG.
STUDY 504, Roon Nucleus + RevB, 808v6, 5200SE, Mac & PC (Touch Screen), Prime+PS Grado GS1000i
HORIZONTAL: M80, MS200, Red Rose Spirit + Sonus Faber Toys, iPad Mini
A capella to Zydeco