White Noise?

Thanks, Marco. The noise is there when the preamp is on but it quites down when I switch the preamp to standby. I replaced the tube preamp with my Classe Four ss preamp and the white noise is even louder with this set up. I use a Panamax line conditioner, too. It is not so annoying to everyone else, but it is to me. You are right the new position makes everything sound more magnified.
-Durr

Marco, the sound is more like hissing/rushing than a humming. The standby on my Cary cuts out the white noise, but the tubes are still glowing. So it must be a warmup/standby feature. Thanks for taking the time to help. -Durr