earth ground disconnected or not ?

Well. i dont have grounded outlets in my listening room so i took it from a outlet in the kitchen but they are using the same fuse at least. So its rather easy to disconnect the earth in my case.

From what i have heard grounding give you a better bass and not grounded give you a more vivid sound.

Detlof,
If you use higher or lower values on fuses compared to what is recommended in a cdplayer,preamp or poweramp does that affect the sound quality ?