Originally Posted by BobbyRS
I don't think it is a bug as much as I think that each preset may be such a different setting, that when changed all at once, it is easier to hear the changes.
The same thing happens if I modify the custom EQ, change it to EQ off (X-FI also off), and then change it once again to custom EQ.
I noticed a good difference when doing radical modifications in the EQ, like putting +12 Db on 80Hz and then -12 Db.
I just noticed the difference when changing or turning off the EQ.