I am thinking about a Sony portable DAC solely for usage at the gym. I notice the newer ver. PHA 3 has a Toslink input, and my portable Sony Discman also have a fiber optic output. If I
were to buy a PHA 3 that connects a discman to it. Would there be a noticeable difference in soft rock type of music? such as Jennifer Rush or Celine Dion?
is there any shortcoming on these PHA? other than the price