Effective AC power conditioners for digital??

I think digital, especially, can benefit from cascading styles of power conditioning and filtering. Chokes, caps, balanced power transformers, etc. all deal with AC line noise in different ways. They also serve to isolate digital nasties from other equipment.

I'm guessing the better made players (aka Linn) already have something similar built into their players and DAC's, which is why you may not hear much if any difference.

Enjoy,
Bob