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.
(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.