Harbeth M30

I wonder if the OP has figured things out already in the last 15 years.

Yea 12 years is a stretch but then again bumping dead threads with pertinent information doesn't hurt either as folks still shop for these speakers(or whatever product it might be)..
 I myself have been living with M30.1's(Ebony)for the last year,driven by Cayin KT88 tube integrated amp,cabled up with Nordost Norse series in a WELL treated,smallish room.Quite simply I have never had or experienced purer,more colorful or emotional sound in my home in the 40+years I've had a system!If you have M30's & don't like the sound it's either set up,room,cables or amp cause the speakers,in the right room,are truly magical!

Lol I'm looking at a pair of M30's comparing to Spendor A4's. This old thread was definitely helpful!

I have a pair of M30.1, and they sound terrific powered by an older Hegel h160 integrated.

2 years now with my M30.1's & although thanks to Covid 19 I never got the dream amp to drive them,settling instead for a 15wpc.Pure Class A SS Chinese amp,they are still the finest speakers I've ever owned.Over & over again I amazed at their ability to see DEEP into a recording,digging out things like that tiny little dead space BETWEEN the windings of a guitar string as a finger slides along or the resonance of a Gibson LP body compared to a Fender Strat..I really don't see EVER changing speakers again,unless I get lucky with a few stocks then the 40.2's would replace them but for the next year it will be all about saving for that Sugden A21SE that I dream of driving the Harbeth...