IMHO, if you think you might be pushing it from time to time for parties, etc., I wonder if buying the more powerful Class AB amp might be better. There's probably less chance of frying a tweeter with the more powerful amp, especially if guests get carried away.
Pass X vs XA amps sound quality in class A range
If you are one of those lucky enough and has the means to upgrade from the X (or X.5) to the XA (or XA.5) Pass labs amps, is there enough of SQ differences in low power ranges, say between 5-25W, where they all perform in class A mode, supposedly. Thanks for any insight!