MBL 9011 v/s Boulder 2050 monos

And these would be driving... what speakers?? And driven by what???
I.e. what's the system? All your parametres -- but esp. 2-3 -- refer to spkrs and amp-spkr interface primarily.

For example, 901 was more satisfactory driving Tannoy Westminsters than the expensive stereo Boulder (whatever its number).
Neither produced 1 or 2; 3 was OK on both probably due to spkrs set-up more than anything else.
What was wrong? Amps? Speaker cabinet? I don't know... Cheers

Sthekepat:

The MBL sounded more warmer and softer but with higher extension on the top.

Well, your quick comment is reasonably close to my experience with Tannoys above. Only, I did not detect the same anomalies in the bass region from the MBL. Hence, I preferred the MBL in that application. I would probably prefer them driving the Kharma's ceramic driver set-up -- but am just speculating.