Hi RonS, thanks for the reply! I only tested the unit on iPod and CD input since those are my primary sources. The FM/AM work, but those sources are so noisy anyway that I didn't bother. For an idea of the issue, listen to your unit on an iPod or CD, turn it to about 15 on the volume, and then pause the music. You'd expect to hear nothing coming from the speakers, but I hear a static hiss and a light humming from all speakers.
The very strange thing is that if I connect the subwoofer outputs instead, I hear the same hiss but with a lower frequency. If I connect multiple the front and