What kind of power amplifier emits little or no electromagnetic radiation?

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Those are Class D amplifiers, aren't they?  I've never been able to tolerate any Class D or T amplifier.  As they use pulse width modulation which generates a lot of noise.  I instead use older tech -- Class B is fine.  I have one from Creek and one TEAC that doesn't bother me at all, but there was a time, decades ago, that no amps were Class D or T.  So all of those would have been fine.

Marc
 

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On August 23, black-sun [via ES] <[hidden email]> wrote:
> What about class AB? I think Class AB consumes less energy than Class B.

Yes, I think Class A, AB, and B are all fine.  Although maybe A consumes so much power that it may cause different issues for people with sensitivities.

I think the only ones we need to avoid are Class D and T.

Marc

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> Do you think
> http://www.sovox.cc/pro.asp?id=300&title=Transistor%20Amplifier&CatalogID=21&rootid=40&kai=1 (SV Audio SA60) is a
> proper class AB amplifier without electromagnetic radiation?

Well, all amplifiers are going to have electromagnetic radiation.  The thing I'm trying to avoid is pulse width modulation.   If that description is correct (that is, it really is a Class AB amplifier), then I'd think it should be okay.  But I've never heard of this brand or amp, so I can't say for sure.

Marc
 

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> What kind of idle power consumption and active power consumption can I expect from class AB amps?

Heh, I have no idea... one would probably need a Kill-a-Watt meter plus the amp you are interested in using at the volume levels you will typically be using it at.

Marc

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You know, I've actually tried the Dayton APA150, and for whatever reason, I could not tolerate it.  I don't know why.

But I agree, it seems like from the class of amp it is, it should be fine.

Marc
 

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On August 23, black-sun [via ES] <[hidden email]> wrote:
> You could not tolerate it because of electromagnetic radiation or dirty electricity?
 
I don't remember.  This was years ago.  It could have been chemical off-gassing, for all I know.

Marc