Buzzing sound from Krell HTS

[bayou]

I hear a buzzing sound on all the inputs from my Krell HTS. I bought this couple of months ago and hooked it up only now.

Setup:
The ac outlets are all properly grounded.
Krell HTS is connected to a ac outlet with a 3 prong power cable.
Rotel RMB-1095, also connected to a ac outlet with a 3 prong power cable.
Krell and Rotel are connected (only R and L front channels) with a pair of Monster RCA cables.
Rotel is connected to a pair of B&W 705
A CD player is connected to Krell's coxial digital input

To identify the culprit, I connected Krell to an old Sony amp. and I hear the buzz. Also, I tried another CD player with no change.

The moment I start playing I hear a buzz along with the music. The music is definitely louder than the hum. When I pause the CD, all I hear is buzz.

When I switch to Tape (analog) with or without connecting my tape player, I hear the buzz.

Can anyone help please?

I am an experienced user and have covered the ground or so I think. Hope I am missing something and is not an issue with Krell. I don't even want to think how much it is going to cost me to send it to Krell for repair.

Any input is highly appreciated.

[John Holmes]

Welcome to the Guide bayou!

Since you been in the hobby for awhile I'm sure you've also attempted to check all wire by removing one at a time. But, from your post, it does seem that the problem may very well be with the Krell itself.

BTW, Nice gear. :T

[subynube]

Remove the coax cable from your TV, and see if the buzzing goes away. If the cable is not grounded properly, then the system will buzz. This just happened to me in my new apartment, so I bought a cable ground isolator for 10 bucks at parts express and it went away. Hope this helps.

[OttoMatic]

Perhaps it's a ground loop issue. Try lifting the ground plug of the Krell with a cheater plug.