Just a cautionary note, the so called end to end differential topology, whatever it is, does not mean much unless the product has better verified (such as by measurements) performance than similar products that do not use end to end differential. If done well, end to end differential could cost as much as double the cost for the parts alone, and if not done well the results could be worse. Also, assuming everything is good, for a truly end to end setup, then one has to consider not just one device but every one in the chain, such as the source such as phono, dac, BDP, streamer, preamp, power amp etc., its some deep multi rabbit hole.
Such "topology" has the advantage that it could in theory cancel the even harmonics, but if you look at even a 19 channel AVP such as the AVM90, it already manage to limit THD+N to lower than -100 dB, and the even harmonics itself are well below -100 dB, so lowering it by less than 1 dB (likely much less) or so is not going to make any difference.
Fully/end to end differential, along with damping factor, EPDR (less so on that one) are becoming just buzz words many so called audiophile tend to throw around for whatever reasons, some just want to show off their new found "knowledge" lol..., been there, done that.