There are products made for audio that are called voltage regenerators. Generally these units are considered the best surge protectors and I imagine are set to a desired voltage.
I do not think that feeding a high quality internal power supply a steady voltage would reduce dynamics. The power supply circuit should have the ability to respond appropriately to the demands the music puts on it idependant of instaneous current draw. If the power supply is that good though... I get your point, that an external steady voltage should not be required. I can't see how it would hurt however.
I do not think that feeding a high quality internal power supply a steady voltage would reduce dynamics. The power supply circuit should have the ability to respond appropriately to the demands the music puts on it idependant of instaneous current draw. If the power supply is that good though... I get your point, that an external steady voltage should not be required. I can't see how it would hurt however.