Amplifier Specs

Do not call it cheating unless you can explain why you need 150W above 1kHz.

I'm not sure I understand: why do you think "150W @ 1kHz/8 0hm load" a cheater spec?
It is unlikely that this is a misrepresentation... it may not mean much (i.e. 8 ohms resistive, average? what about @ 20kHz, etc) -- but cheating?

I think the question Morden asked is "Why isn't the amp's output spec'd into the usual 20-20k, 8ohm load"? It's a fair question. Note that the amp makes no claims to deliver the rated output ABOVE or BELOW 1kHz (where it may well be needed) and could, theoretically roll off steeply at, say 10kHz. The lack of further description of the 8 ohm load, while both annoying and less informative than it might/should be, is SOP.

Unless there is an accompanying power bandwidth spec (I'd double check for this), I'd agree that this is a misleading spec for a high end amp.

Marty

Question is different from accusing somebody of cheating.

B&K amp in question is most likely class D amp where output circuitry (Zobel network) would burned out at full power at high frequencies. It is irrelevant since there is very little power in music at these frequencies but there is no easy way to specify it (it's a curve). It might apply as well to class AB amps since most of them has inductor on the output.

Most of manufacturer's don't even specify frequency range for the power. Not only class D (Rowland, Bel Canto and most likely hundred of others) but also other classes amps (Krell for instance) don't have frequency specification for the power at all. Are they all accused of cheating as well?