OK here are the 3 big problems I see 👀 regardless of what format the disc is. Two of the problems involve vibration - structure-borne vibration, acoustic and other mechanical vibration (motors, CD transport, transformers, etc.), and vibration of the disc itself (!) whilst spinning, preventing the laser from staying on the nanoscale spiral track.
The third problem is produced by scattered laser light that fills up the entire inside of the CD transport and is picked up by the photodetector as real signal. I’m sorry to have to be the one to say this but you’re only hearing 50% of what’s on the CD if you’re listening to stock off the shelf systems. It’s no wonder differences among the various formats is oft indistinguishable. The systems aren’t resolving enough. Hel-loo!!
The third problem is produced by scattered laser light that fills up the entire inside of the CD transport and is picked up by the photodetector as real signal. I’m sorry to have to be the one to say this but you’re only hearing 50% of what’s on the CD if you’re listening to stock off the shelf systems. It’s no wonder differences among the various formats is oft indistinguishable. The systems aren’t resolving enough. Hel-loo!!