In article , Iain M Churches
wrote:


Have you actually taken the trouble to listen to a good SET (for example
Andre's Kiss amplifier) playing Shostokovich ¨ String Quartets or a
small chamber ensemble? Quite remarkable:-) Your Krell, and most other
amplifiers, I am told, fade in comparison.

This seems to bring us 'full circle' on one issue since the proposal that
you would do some comparison tests developed in part from my suggestion
that the amp o/p impedance can interact with the speaker impedance,
sometimes altering the sound (frequency response). From the few reviews on
SE amps I have seen, they tend to have quite high o/p impedances with
figures I've see quoted being the order of 1 Ohm even midband at low
powers. :-)

Given that such amps also tend to have limited power and may therefore tend
to end up being use with 'high efficiency' loudspeakers, I wonder if such
speakers tend to have impedances that vary more with frequency than do
lower efficiency types...

Slainte,

Jim

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