Hooking DishNetwork receiver to amp=speaker noise?

OK, I found a pretty good solution. I bought a little powered switching box that takes 2 RCA inputs and has 4 RCA outputs (not a cheap one, about $80 from a company called RF Link), sent the Dish audio output into the box, and the output to my amp, and there is dead silence now with the Dish box connected.

But with the TV itself run into the box, there was still a bit of noise, so I didn't connect the TV.
But I'm happy now.

Likely a ground loop as stated by Kdbrink above. There are several solutions, but the easiest is the addition of a ground loop isolation box (like the Mondial Magic). They run about $80. Happy Listening.

Another vote for a ground loop issue. I have had my (various) Dish receivers hooked to my stereo for years and have never had any issues you speak of.

I have also used the digital out on the back of my Dish receiver and ran it to my DAC. The sound was a touch better, but nothing spectacular; I was using it for the satellite radio stations and they are compressed.

Are you using the antenna input on the Dish box?
If you are what is it?
I once used the antenna input for basic cable so when dish went out I still had channels I could watch.
I had to also install a Mondial Magic because of the hum when cable was connected.

If you have an optical input available, try that.

Optical won't complete the ground so no 'loop'.

Now, on the Dish receiver, go to the menu and 'system setup' than 'audio setup'.
Get rid of the night volume leveling and set output to PCM only.