Easy test. It will take 10 minutes.
Unplug the preamp from that Belkin power strip and plug preamp and power amp into separate outlets - don't plug the power amp into the switched socket on the preamp. Unplug the power strip from the unswitched socket and plug your CD player into a 3rd outlet - use an extension cord if you can't reach.
Report back. I would be super surprised if you don't notice a decent improvement.
Regards,
Unplug the preamp from that Belkin power strip and plug preamp and power amp into separate outlets - don't plug the power amp into the switched socket on the preamp. Unplug the power strip from the unswitched socket and plug your CD player into a 3rd outlet - use an extension cord if you can't reach.
Report back. I would be super surprised if you don't notice a decent improvement.
Regards,