Why Don't We See More High Current Electronics?

Looking down the list for my interpretation of your electronic/price/weight criteria:

Sale pending: BAT VK500 (105 lbs), Threshold S500

Used: Belles 350A Reference

New: W4S ST-1000

Irvrobinson, he wants something that doubles power as you cut the load impedance in half. But I don't like feedback (human hearing perceptual rules meow meow...)

-03-18-11: Atmasphere

Atmasphere, technically there is no such thing as no feedback in an electrical circuit and hence a zero feedback amplifier, can you quantify your statement ?

regards,

Not a fan of the VK500 or The Belles, Threshold S500 .. Yes!

Well Weseixas, I think we part ways on your appraisal of Class A. More often than not (but not always), I've found the more Class A the better the sound. The only problem is many so called pure Class A amps either don't have enough power for the the speakers I prefer, or the cost is beyond my budget. ...And of course, the issues of size heat, efficiency, etc..

Unsound says: Well Weseixas, I think we part ways on your appraisal of Class A. More often than not (but not always), I've found the more Class A the better the sound. The only problem is many so called pure Class A amps either don't have enough power for the the speakers I prefer, or the cost is beyond my budget. ...And of course, the issues of size heat, efficiency, etc..

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Is predictive bias-level adjustment a la Krell and Levinson enough, or must it be pure, brute-force Class A operation only?