Why Don't We See More High Current Electronics?

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?

Unsound ,

I won't disagree, i can only express my involvement at many levels and again iterate that I find high Class-A Bias amplifiers not to sound like live music IMO, tending to be soft and laid back ( gentle) and nothing like the recording or live music, of course there are exceptions, but for the most part, , yes, this has been my observation.

Again speaker topology play's a big role here and of course there are those that prefer soft and gentle to
"real " and if you have a speaker which is forward sounding or "bright" it will have an issue on anything but Class-A.



Class- D have what i speak of in spades, unfortunately other issues with that topology leaves it a bit dry making ClassA/AB still the best output stage topology IMO.

regards,

Irv,

We have taken Krell's and re-biased them to 10% of their original class-a bias after service and recapping and the difference is astronomical.

Anyone with an older Krell KSa 200/300 et al series should give it a try, no more 1400 watts being pulled at Idle .

regards