If a device adds harmonics, the voltage is going to change
See http://ielogical.com/assets/Audio/misc/SubHarmMod.png for a simple example.
Power supply diodes only conduct for a fraction of the AC cycle. If the AC voltage is modulated due to increased harmonics, it is going to change the diode conduction period which in turn will modulate the DC supply and not in concert with the music demand. If the added harmonics decrease the voltage at a musical peak, clipping is more likely. Never a good thing.
Some like valve rectifiers because they modulate the power supply in concert with the program.
More than once, a new WhizBang has elicited the response:
"You’re freaking joking, right?"
See http://ielogical.com/assets/Audio/misc/SubHarmMod.png for a simple example.
Power supply diodes only conduct for a fraction of the AC cycle. If the AC voltage is modulated due to increased harmonics, it is going to change the diode conduction period which in turn will modulate the DC supply and not in concert with the music demand. If the added harmonics decrease the voltage at a musical peak, clipping is more likely. Never a good thing.
Some like valve rectifiers because they modulate the power supply in concert with the program.
More than once, a new WhizBang has elicited the response:
"You’re freaking joking, right?"