White Noise

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!