Yuhengdu, perhaps your speaker placement and room interaction is not optimal? Pass and C1 pairs favorably for me. The Krell might give you more resolution as Extravaganza mentioned. You have to bring in the krell or other amps/sources to experience which one sounds better. Enjoy the search.
Pass labs xa30.8 vs Krell evo 402e
Can anyone help to compare the sound of these two amps? I have owned int30a (xa30.5) before, happy with it but think the vocals are a little bit far/veiled sometimes. Thanks.