Pelliott321 wrote:
....I did try my cart monopoly blocks and hum was there.
Thanks. Just asking the obvious. Are the amplifier and preamp plugged into the same outlet? Not just the same circuit, but the same outlet/power strip? I've experienced hum from that before. Plugged a powered sub into an outlet (same circuit) across the room and got wicked hum. Plugged into the same power strip as everything else, silent.
Are you using Audiophile power cords? If so, try a generic set of power cords. I've seen those introduce hum.