Receiver with main ins?

Hi all,

Since I like to tweak, and own some stuff like an Outlaw Bass Manager and a DSP-Equalizer it would be helpful to own a receiver with not only preouts but also main inputs!
I was amazed to notice that only the Marantz SR-9600 has them, but I feel all these top-of-the-line models are priced out of proportion.

And to tell you the truth my SR-8500 is good enough for me...
Anyone know other models that sport main amp inputs?
Can't use a separate final, because I'm biamping, so I would need a 7 ch final...and there are not many around with good wattage...

If all fails I might try to add a main in/out board (with links).
Anyone know which cables should be interrupted?