Hydra 2 for digital

Has anyone used this model to good effect with any cd,dvd,or sacd player. I have MIT ISO HC which is very effective but would like to see improvement if possible.
A shotgun AC 1 power cord to the ISO was an improvement over stock so I think more enhancements are possible. Thanks.
My digital components and an fm tuner are plugged into a Hydra 4 and it lowered the noise floor immensely. My amp and pre are plugged into a Hydra 2.
Have you tried switching devices?
yes, absolutely no difference.
Interesting, thanks.