Music reproduction needs of 2 signals, one constant and one modulated.
It is clear that the modulated signal is the one coming from the source, let it be a turntable, a CD player, a streamer or whatever.
The other signal is electricity. Not less important but most neglected because considered as a given one. But it is fed in each single component of the HiFi chain.
Then, if we have the chance to improve the electricity, we do have the chance to improve the output of each single component of the HiFi chain.