First, will bi-amping improve the sound quality of my Magneplanar system? What improvement, if any, might I hope for with the MG 1.6's? (Note that I'm not looking for more power per se.)

Second, will my bi-amping approach work? The scenario follows:

My present configuration has my 1.6's driven full range by my Bel Canto integrated; my PSB Subsonic 6 sub is drive from the variable-gain outputs on the Bel.

I still have my old Phase Linear 400 lying around. It is working fine and has upgraded, 22,000 uF power capacitors. I would consider using this a the bass amp for the MG 1.6's -- the bass low-pass on the 1.6's is 600-700 Hz.

It would be ideal to insert an active cross-over between the Bel's pre-outs and it's main-ins-- unfortunately the Bel doesn't have main-ins! Hence the Bel has to driven full range. I might drive the Phase full-range directly from the Bel's variable-gain output except that Phase Linear has no volume control and I don't know its sensitivity relative to the Bel Canto's power section.

My "solution: would be to drive my old Apt Holman pre-amp from the Bel's out puts, and the Phase Linear and sub from the Apt's pair of outputs. Of course, the MG 1.6's cross-over would filter the full-range out put from the Bel and the Phase.

OK: would the above work safely? Would it be worthwhile to try?