[Doug McDonald[_6_]]

On 3/14/2012 4:20 PM, Scott wrote:
On Mar 14, 12:23 pm, Doug wrote:

All properly designed power amplifiers must sound absolutely the
same ... otherwise by definition they are either defective or
the speaker load is too low impedance for them. There are first
rate speakers out there whose impedance drops too low for
some otherwise excellent and perfect amplifiers.

Doug McDonald

Where do you get this defenition? Who makes these rules? A properly
designed amplifier is an amplifier that works reliably as it was
designed to work. There is nothing "defective" about amplifiers that
add euphonic colorations and they certainly do not all sound the same.


Ah! It's simple ... the definition of amplifier. An amplifier
amplifies the input signal. That is, it makes it larger, period.

If it wants to do other thing, of course, it most certainly can. There's
nothing wrong with adding "features" to an amplifier if someone wishes,
so long as they are properly speced and labeled.

Devices to do this, however, properly have other names.
Such names are "tone controls" (which that NAD actually has!),
or "equalizers" or "low pass or high pass filters" or "shelving filters"
or in other cases "nonlinear stages" (i.e. single ended triodes with no feedback).

Doug McDonald