Why don't higher end amplifiers come with a separate power chassis?

Many higher end preamplifiers come with separate power boxes, but I don't see amplifiers with separate boxes, any idea why this might be?

emergingsoul01-07-2023 12:44am

erik_squires Details Discussions Posts This discussion Message User 16,592 posts 01-10-2023 at 02:01pm Copy Comment URL Report Comment Edit Delete @pwayland - The effectiveness of a tiny bit of resistance in the power supply to reduce or eliminate noise should not be underestimated. DC sources with a tiny resistor in the way are going to perform much better in terms of noise rejection. This is why it drives me a little nuts to see audiophiles trying to use car battery cables all the way to the transformers. The resistance and inductance between you and the rest of the world is a plus.
erik_squires Details Discussions Posts This discussion Message User 16,592 posts 01-07-2023 at 07:37pm Copy Comment URL Report Comment Edit Delete Isolation from induced noise vs. distance between the amplifier circuitry and the supply. It's not a zero trade-off solution, but it certainly appeals to the separatist mind of audiophiles.