Sounds like you are hearing the music that you have been missing. Inductive power cords can act like compressors or tone-controls, holding back the dynamics of the amp, particularly at HF. If there is harshness in the recording, shouldn't you be hearing it? If you get a really excellent recording with no harshness you will probably miss a lot of the music.
I do not consider the Classe to be tube-like. Amps that use no negative global feedback tend to be more tubelike. I would recommend a different amp or speakers.
I do not consider the Classe to be tube-like. Amps that use no negative global feedback tend to be more tubelike. I would recommend a different amp or speakers.