I tried this with my VR4 genIII's - it is not pug and play. After fiddling with it for a day I punted. I ended up with a vertical biamp arrangement using identical Electron Kinetics Eagle 4 SS power amps. It's a fair bit better than using just one of the Eagle 4's, and better than other single amps I tried. Now and then I rotate in my TAD 60 tube amp full range. It's different - much nicer in some ways (mid's imaging), not as good in others (bass, dynamics).
