@littlek,
Electric Ladyland on a vinyl LP was pretty well recorded and mastered. However , speaking generically, a different recording process can occur depending on how the label releases a particular CD in terms of its re-mastering...specifically in the noise reduction (or noise increase and stereo channel separtation ). If the label used a bad master (due to its degradation or they try to 'diddle with the remastering) to record the new CD, it can sound like hell. Of course if they crowd more than 70 mins onto a CD and shrink the file's resolution in order to do it, a mess can occur too.
Witness the sonic mess made (bad master) of Santana's 'Abraxas'. It soujdas gross on CD and fair on LP.
I have a gold stereophile CD of Electric Ladland that sounds pretty good, so I'm guessing the CD you have is a particularly bad re-mastering on that record label.
I will assume that most of your other discs are fine and it's not the fault of your player or amp/receiver.