450 Pound Monobloc Amplifier

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The 450 pound Boulder monoblocs are small potatoes compared to
the 1,000 wpc Krell Master Reference monoblocs seven years
ago. The Krells weighed 680 pounds per monobloc. Boulder
managed an extra 500 wpc and are 230 pounds lighter, so
compared to Krell, it looks like Boulder found a way to make
the amps smaller and more powerful.
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If I could pick a large heavy amp I would love to hear Ralph's (atmasphere) MA3's driving my soundlab M2's;has anyone ever heard the MA3's or these Boulders that are being discussed other than Stringreen's comment?

My Class D Bel Canto monoblocks are each 8.5" (216mm) W by 3.5" (88mm) H by 12" (305mm) D. Weight: 18.5 lbs (9kg). 500w/ch. Very well reviewed. Still recommended by mags after having been out for several years. They sound as good as pretty much anything I have ever heard (I have heard a lot!).

David versus Goliath?

"Man, a 1500 watt Class-A amp must be one HELL of a home heating device!! Not to mention being able to cook yer bacon and eggs while listening to your system..."

Not to mention the power utilization even when not playing?

I guess Boulder is not a "green" company. No moss growing there!

If it catches on, world peace might be threatened. Where is 007? Tell him to withdraw from whatever he may be doing. Evil audio threatens!

Any mags or other "trusted" sources done any shootouts between the biggest monster amps and best of the much smaller Class Ds in recent years? Lots of good reviews for both camps, but how do they really compare sound-wise on various systems that can truly benefit from a lot of juice?