I can tell you as I own Boulder 2060 - no contest with many amps out there, from Classe CAM600 and Cary 211FE and MAC 601, all of which were compared in detail by me.
I have not yet heard an ML, and while good, I would have a heard time believing it hurts the big Boulders.
I have not yet heard an ML, and while good, I would have a heard time believing it hurts the big Boulders.