Any Harbeth users hear Fern and Roby Ravens?

The single driver Ravens look very interesting.  Suggest that you also take a look at Omega Speaker Systems.  I was ready to purchase the M30.1s several years ago after a lengthy home audition. I then was able to very shortly thereafter hear the Omega Super Alnico Monitors (also single driver speakers like the Ravens) at someone’s home and liked the SAMs so much that I immediately ordered a pair.  Compared to the M30s, the SAMs (to my ear) are fuller, with better bass and, again, to my ears a better midrange (as background, I was replacing my pair of Spendor BC-1s).  I listen to a wide range of acoustic folk/Americana, jazz, classic rock (e.g., The Who, Pink Floyd), groups like the National and Big Red Machine, World music, and classical chamber (e.g., string quartets) and orchestral pieces (e.g., Mahler symphonies, Fritz Reiner’s Scheherazade). I have the SAMs in a 16’x25’ room, driven by a Unison Unico hybrid integrated.

Thank you ihor! So helpful. 

I heard the Ravens at the 2018 CAF and was seriously unimpressed.  I don't know if they've undergone development since then.  They were in a LTA room driven by one of LTA's integrated.  (I speak as a H 40.2 owner.)