Krell Amps vs others

Pettyfeversk: Your Dynaudio's will take a million watts if you can feed it to them. So long as you keep the quality level of the power that they are being fed up to a high level, the more power that you can feed them, the better they will sound. Welcome to the world of "phenomenally thirsty" speakers. My guess is that about 800 - 1200 wpc should do it. Obviously, this will depend on the size of the listening room, type of music and the spl's that you want to achieve with good clarity.

John: I like your thinking. I too "love" the SA12's. I had a chance to buy a pair a while back for a very fair price and passed it up. I am kicking myself on a regular basis over this one. Out of all of the deals that i've passed up, this is the one that haunts me. Having said that, I'd like to see how the 12's stack up to the newer X amps in a side by side. Regardless of which one would "win", it would be quite fun and interesting to say the least : )

Art: Your right on the money. I wonder what amp is actually biased and operates in Class A the longest ( highest power ) ??? Bare in mind that as you drop impedance, your ability to remain in Class A also drops. I know that Bear's amp, which is a MONSTER ( or is it a "bear" : ) in terms of sheer weight, runs in pure Class A up to 50 watts. Anybody know of anything that beats that ? I know that a lot of amps say "Class A", but i sincerely doubt that they operate up to the levels claimed in Class A. Sean
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Check out Edge and Boulder, as well. These also offer a variable bias approach, somewhat akin to Krell, but implemented differently if I'm not mistaken. Class A operation is maintained by ensuring the bias point is high enough relative to the signal level to prevent signal distortion or class AB operation. This greatly improves amplifier efficiency, but at what sonic cost? None? A little? A lot? Listen for yourself and decide. Good luck.

As above, regarding "clas A" & how much of it we really get.

Other than Bear's Symphony1, another amp that runs in A for a long time is the Symphonic Line Kraft 250 (stereo & monos: the latter offer ~250 A instantaneous @ peaks). BUT, like Bear's amp, they are huge and heavy (+150pds each), and UNLIKE Bear's amp, they are ugly. But they produce prodigious bass and natural harmonics in the upper end...

Why am I missing the 'older' Levinson gear here?
IMHO, the 20.6s still rock ....

You might also consider the sunfire amps, not exactly class A but what the hell. I have heard nothing but good things about Pass, but I have heard some krell KSA's and they are amazing. Also though not class A, what about the big Bryston amps 7Bsst? A great amp and more affordable also reliable! Since you are asking about class A amps have you experinced the Heat generated by true class A devices? It is something to consider. On the nelson pass website he claims something like for a true class A device you should expect an amp to weigh something like 2 pound for every watt of power that is very heavy and I know of two people granted they are in thier 50's that have damaged thier backs moving large amps(no joke!). Good luck!

Jeff