Hum noise in ModWright 36.5 230v unit

I am wondering if somebody else experienced a hum noise issue with ModWright 36.5 preamp. This is 230v unit.

Thanks in advance.

abronfer08-29-2009 8:45pm

redoctober2 Details Discussions Posts This discussion Message User 13 posts 12-25-2009 at 02:51am Copy Comment URL Report Comment Edit Delete Is it not real balanced?