The Nad does look plenty impressive, its reviews speak quite highly of its room correction technology.
Theyre dont seem to be too many distributors here in canada that i can find though.
Lenbrook is the North American distributor for NAD and they can tell you where in your area to purchase.
I just read that the Yamahas are able to bi amp themselves through the unused rears, allowing the front sides to gain a more dynamic range. Ive never heard of anything like this before, have you guys seen anything like this previosuly ?
Yes, numerous manufacturers have this feature
How could you Bi amp a speaker that only has the two bindings? Run the wires in parallel?
You can't without serious surgery on the crossover within the speaker. Typically speakers need to have dual binding posts (one for each portion of the crossover the amp section will drive) to allow this.