It looks like audiophiles go as far as installing separate powerlines to power their high quality audio systems. The motivation is that the amplifier and other hardware would run cleaner when the powersource provides cleaner waveform and with a separate powerline the amplifier will not be affected by various electrical devices run by other households.
Let's not assess whether any audible difference can exist because that's highly subjective. I'm interested in the purest waveform of the powersource part.
That separate powerline
- can be hit by lightning
- is also parallel to many other wires around it and so can be affected by processes in those wires
- is connected to a large grid which has tons of transient processes happening all the times
so it doesn't really sound like a reliable best purest waveform source.
Would a motor-generator set run on the original powerline be better? It looks like it doesn't care much about all those lightnings, parallel wires and the grid.
How good is a motor-generator set for generating the purest waveform electricity?