I have an Anthem amp that powers the M80's and use the NADT773 as a preamp. When everything else is completely disconnected including power cords and surge bar, there is a small amount of hiss just from the Anthem. When I power up the NAD the hiss becomes louder. It disappears as you move back and around 6 feet becomes pretty well unnoticable. Even the surround speakers have a slight hum to them. However slight, there is some.
From all other manufacturers, are we saying they have no sound at all when left without a source playing, even when listening up close.
From reading the other posted site discussion, this appears to be with only some of the products and not with each one.
Another variable is my main circuit breaker box is within 3 feet of the speaker and within 5 feet of the amp and receiver. Could this, being one item I couldn't shut down or unplug, cause this disturbance?
Troy
