A good receiver with rear surround preamp out?

I inherited a pair of Maggies and had to buy a high current amp and pre-amp to run them and now I would like to incorporate them into a surround system for a workout room.
My theory is to get an integrated SS reciever with rear surround preout and run that into the big amp to run the maggies. Any help would be appreciated.
Thank you,
Matthew Jones
The Outlaw audio receiver has pre-outs for all channels If I'm not mistaken. These come up used here on Audiogon.

The McIntosh receivers have pre-outs for all channels too. Arthur