Originally Posted by
hifi_dave
If the original two phono stages didn't exhibit this problem, it is most likely something to do with the new one.
Logic suggests to me that if the warp and ripple signal wasn't present, the phono stage wouldn't be reproducing it. I'd still be investigating the tonearm and cartridge, sticky arm bearings or an overcompliant (defective) cartridge cantilever suspension could account for the problem.
It is impossible for anything digital to sound analogue, because it isn't analogue!