Early Faint "Phantom" Turntable/Vinyl Signal???

Yep, Koln Concert is rife with the pre-echo.  I used to think it was all the wax master issue noted above, then I bought some favorite recordings as DSD files from High Definition Tape Transfers, and damned if the echo wasn't still there.  Tape print-through.

One of the more famous of 'tape bleed through' cases is the 30 inch per second tape lead in on a certain Led Zeppelin album.

In this case you got the straight poop, but when it comes to the Internet, trust but verify.

Tape bleed comes through very clearly on "Just a little lovin' " by Shelby Lynne  when she sings "This old world...."

Isn't this why tape should be stored "tails out" so the pre-echo becomes post echo (which should be less noticeable?) Anyway, this is what I was taught on my only recording project that used tape. We recorded live (i.e., mixed on the fly) to two track ½" tape at 30 IPS, and mastered the cd directly from that. (This was in 2002 back before the vinyl revival and before streaming and downloads killed the cd market.)