08-09-13: Bob_reynoldsBoth the Marantz PM8004 and Peachtree Decco65 have preamp-out jacks. Peachtree even makes a 220 wpc power amp to work with their integrateds.
As always with integrated amps, I suggest you look for units that allow complete separation of the preamp and amp sections. Most NAD models provide this functionality.
You also may not need pre-outs if the subwoofer has speaker level inputs. Some of mine do, some don't.