White Noise

Yes, only when the HT receiver is on. Any suggestions for an AV receiver to drive my center and rear speakers?

auxinput,

Thanks so much for the detailed response. It's definitely a hiss and not a buzz. The Corus and Marantz are plugged into the same Torus power conditioner. I'm using Audioquest Golden Gate interconnect cable(will getting better cable help). I use Wireworld Silver Eclipse 7 for my 2-channel.

auxinput,

Thanks, I'll try your work around suggestion tomorrow. I reached out to Rowland to see what they suggest. They're very helpful and should be able to give me some advice.

I solved the white noise by replacing the stock power cord with a 6' Audioquest NRG-2 power cord. The power cord reduced the noise by 95%.

I thought I solved my white noise problem,  but I didn't. I changed to separate AV components. I sold the Marantz SR5011. Now I have a Marantz AV 7002 mkII and a ATI 3-channel amp. When using my HT bypass on my Corus preamp, I hear a lot of white noise. It doesn't exist in any other operation, only when I select the bypass input. Please, please someone help. I'm using Audioquest shielded RCA interconnect cables. Will balanced cables help? HELP!

Thanks bob_reynolds,

When I initially contacted Jeff Rowland they said the issue was with the noise floor of my Marantz SR5011 AVR. I sold the SR5011 and now have a Marantz 7002 mkII AV preamp and ATI amp. I'm experiencing the same problem and it sounds worst with the separates. I contacted Jeff Rowland again via email and I'm waiting for a response. It seems to me that the Rowland output is to high when HT bypass is selected. I know Jeff Rowland was attending the recent High-end show and someone should contact me in a couple of days. Their customer service has always been great.

I fixed it!
1) I reached out to Marantz today and for the first time they told me to run a wire from the ground on back of the 7002 mk II to a screw on the chassis. That reduced some of the noise.

bob_reynolds,
2) I took your advice...THANKS! I borrowed a balanced cable and reassigned the bypass to a balanced input. DEAD SILENT!  

Initially I only added the ground wire. It reduced much of the noise; however noise was still audible. After I changed to the XLR cable it was dead silent. I must admit the gain seems a little lower and I will run audesey again.