I use a DV 10X - and have done for many years (and several versions of the 10X).
The usual recommendation is to use the 322 N boards in a 32-5 (or 42-5, or 62, or 72) - or 522 N boards in the 102, 82, or 52.
But… some users on here quite like to use 323 or 533 E boards. Not mandatory - but will give you a better volume match vs CD/Streamer/etc.
See also here - Boards for 72
YMMV, as always…