I tried Lou's DiD under my CD drive, the effect is very audible and brings a real gain in the sound quality of the reproduction of the music of a system. The soundstage opens again, the instruments stand out more from each other giving an effect of space. The bass is clear and degreased without any drag, the mids at the right level with a very fine perception of the details of each instrument. The highs also gain in detail. I can't do without it, I'm waiting for another game to put under my DAC. DIDs are a very important link in my installation and should be considered as important as a good cable. To try urgently.