So it seems that #2 is the way to go. Using the FMOD 50 or 70 Hz crossover simulator would save money, which is good. Also, the NAD does have a pre-out that I'm not using, so do I actually need to use a Y splitter, or can I just use this instead?

Overall though, this a good idea? I mean, am I sacrificing sound quality or anything? Because so far the 320 has been more than enough for the M60s, I just figured taking some of the low Hz load off would enhance my setup.

Thanks,
Jon.

Axiom M60ti Hsu VTF-2 Mk2 NAD C320BEE NAD C542 Systemdek IIX Cables by Unity Audio