Perry and some dear friends kicked in and built me a top tier Clair Brothers chassis 700 series 2 which sports the G1 board and everything thing else latest goodies even down to silver wiring. I run a dual mono Class A preamp so it just makes an already amazingly great thing even better. Zero crosstalk, no noise literally a black hole, seemingly infinite power at my finger tips until the 400w's the D9s will give me run out of power handling then I back off a hair and just still sit stupefied by what I am hearing. Bass that will shake your soul. Highs and mids that sing like a seasoned choir. Just ask a few guys like Dan who have been to my house and handed over control. Do you need it? If you run a dial mono preamp then I would say yes. Regardless, the separation of channels makes the Soundstage even more apparent
If I were to add anything else to this point, I woukd not know what I was talking about as I am no techno geek. Perry and the others are the Pros, i am just a set of happy ears