Looking for some advice again guys

For stereo I have a NAD C320BEE powering M60ti's. I'm looking to get a HSU VTF-2 MK 2 in the near future and need to know how I should hook it up so as to take part of the load off of my little amp.

1. Use the High Level Inputs/Outputs along with the crossover on the sub.
2. Use Y splitters to split the signal from the Pre-Out on the NAD to get two Line Level signals to the sub, and get a High Pass Filter to filter out the bass to the M60s.
3. The same as #2, except without the High Pass Filter.

I'm not sure how each of these differ, only that getting a High Pass Filter means spending more money.

Thanks in advance, and Happy New Year!

-Jon


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