I use two of the JPS Digital A/C cords. I use one with my Theta Casablance Pre/Pro and one with my Theta DaViD transport. Using the P/C on the pre/pro lowered the noise floor. This was especially benifical to me because I have a fairly high gain through my amplifier. The P/C on the transport had a slightly different effect, one I'm not quite sure how to explain (and I'm sometimes reluctant to talk about it because my engineer friends rag on me because they won't believe anything they can't explain). The P/C on the transport made the music more fluid and smooth. I want to try and explain it as a reduction in the digital jitter but I'm only guessing. As Nar_com suggested have your dealer audition the full range of JPS P/C for your system. I have a power A/C on my amps and found the improvement that Nar_com described there also. I'm a big fan of JPS cables. I don't think you will be disappointed.