New Digital Switching Amplifiers

No. There is no correlation to the switching frequency and input signal. If you took x number of any brand of "self-oscillating" amps, put them along side, they would all be different. The ones that I use will vary between 480 kHz to 510 kHz or so at idle.

The old style ones.......the ones that gave "digital" amps a bad name......used a fixed frequency oscillator. It remained constant.

does anyone happen to know, if the outlaw model 200, mono block is a digital switching amp, like what is being discussed here ?

What would it - high freq hash above 20k - sound like over speakers?

Bob Wood
http://www.GreatHomeTheater.com

Thanks Ar_t.
Bob, I don't think there is any sound you can hear over 20k but purely subjectively, it gives me a headache. Just don't ask me to DBT my experience.

Personally I dislike the entire working principle of digital amps
(aka class D,PWM).
First of all the introduction of a convertor into the signal chain
(converts the analog signal into a pulse-width modulated one),
then the fact that the transistors only ever are fully off or fully on
and in the full on only transmit white noise.
That the re-conversion relies on the inertia of the connected drivers.
The high-power fast switching limits choice of transistors to VFets.
Radio interference created by the switching and frequency,harmonic and intermodulation distortions created by the modulator (convertor).

The only reason for their existence is that they are very light and cheap
compared to regular amps which makes them ideal for touring pa application.
They are just about good enough for the job.

By the way switching frequency and amplitude is fixed in all these amps
as their functioning depends on it.