tweak1
I’m not aware that a differential amplifier offers any inherent advantage regarding crosstalk.
The benefits of true balanced mean NONE of the internal circuits share a board, eliminating the potential for cross talk. Hence more costly ...That’s mistaken. The main benefit of a true balanced (differential) circuit is its Common Mode Rejection Ratio, which means better S/N. There’s no reason at all that a balanced circuit can’t be built using a shared board.
I’m not aware that a differential amplifier offers any inherent advantage regarding crosstalk.