transformer Hum


does anyone know how to decrease this problem ?
My preAmp transformer hums (not through speakers)...
Is this because of my power supply ? I already have a dedicated line. Or is it because the transformer is going bad ?
would line conditioners help ?

thanks,
flying

Showing 1 response by flying

Thanks everyone for the help. I won't go and by a conditioner becuase after placing the sorbathane...it decreased. I can still hear it, but only if my ear is within 12" or so of the preamp. I guess it is ok now ?