My MK2 is dead quiet even with my ear up to the speaker's tweeter and midrange.
Besides what has already been mentioned the amp likes clean power. It wouldn't be bad to use a good power cord connected to a condtioner like the Shunaya which allows unrestricted power delivery and diverts the noise at higher frequencies to neutral. Conditioners based on serial/baum device conditioners will restrict power to the unit so I wouldn't use one of these.
Do you have a dedicated 20 amp line for the amp? That migt help also.
Besides what has already been mentioned the amp likes clean power. It wouldn't be bad to use a good power cord connected to a condtioner like the Shunaya which allows unrestricted power delivery and diverts the noise at higher frequencies to neutral. Conditioners based on serial/baum device conditioners will restrict power to the unit so I wouldn't use one of these.
Do you have a dedicated 20 amp line for the amp? That migt help also.