You're hearing RF interference. The wires in your phono system are acting like antennas. Get Audioquest RF Stoppers or RF Stoppers Jr's via Audio Advisor, www.audioadvisor.com, or similar products at Radio Shack.
Can hear TV or Radio station via Phono stage ???
What causes this? Most noticable during quiet passages in the music. Using a Lyra Lydian Beta, BAT VKP10, SME 20 Table...
And more importantly...how do I eleminate it? Thanks!