Hello,
I tried the Herbies Way Excellent, the Thornes Mat, SDS Isoplat Mat, the Millennium Mat, and the Boston Audio Mat 1.
In your system I would start with the Boston Mat, I think it would be a very good match, and a great start.
Your Harbeth speakers and system have a similar tonal balance to my system and speakers which are ATC. The Boston was the clear match for MY system.
I tried the Herbies Way Excellent, the Thornes Mat, SDS Isoplat Mat, the Millennium Mat, and the Boston Audio Mat 1.
In your system I would start with the Boston Mat, I think it would be a very good match, and a great start.
Your Harbeth speakers and system have a similar tonal balance to my system and speakers which are ATC. The Boston was the clear match for MY system.