"Interference" vs. other flaws

[Beta Man]

Questions:

I noticed while listening to some CDs that I had static.... it's BARELY noticeable when sitting and listening, but certainly noticeable when I put my ear up to the speaker.

I want to narrow down the causes, and want to know if it's possible the length of the runs causing it etc. connection.... AVR who knows... and I'll tell you material I used etc.

I started with an older studio album and noticed it, then tried a new studio album and still noticed it.... I figured newer albums may be mastered better.

I will try to play the CD in my Sony stand-alone Blu-ray player to see a difference, but my first attempts were from my 400 disc Sony SACD/DVD player I have most of my CDs loaded into.

I am running a Marantz SR-5001 in this room to an Emotiva XPA-3 but I could try to connect my SR-7001 but not sure I want to go through that effort right now because I like the 7001 where it is.

I noticed previously that some of my CDs that are old and not well taken care of (in and out of the car etc) seem to be worse, and it's much more noticeable on the ones that have some tracks that even skip due to scratches, so I originally chalked it up to bad-discs.... but with the others I tried, I didn't think it was that because the CDs are basically new.

When testing, and noticing the "static" hiss sound, I could pause the CD, and the hiss would be gone.... I could hear the SLIGHTEST sound.. very slight though, as if listening to the electricity within a light-bulb for instance... something that I certainly wouldn't think anyone would be able to detect while the music was playing.

Does my "pause" test indicate that the sound I'm hearing is possibly due to the material on the disc itself being reproduced? I'm going to try some of my Blu-ray concerts in 2-channel with the "Ear to the speaker" approach to see if it's simply due to the inferior bit-rate of the CD or compression or whatever, but thought that perhaps this was a good place to start.


Anyone else notice "noise" within their CDs in this manner?


**I'd like to point out that this is VERY subtle.... I would think the casual listener would think I've lost my marbles.... but in the quest for "better" I want to explore all options**