I tried the pre outs on the MF kW500 Integrated when I had it for an in-home audition. The pre-amp section on its own impressed me beyond expectations. The pre outs fed the signal to a pair of Cary SLAM-100 triode, push/pull amps (~ 95 watts). Quite a nice combo, actually. I think the pre-amp outs could also be used for a sub-woofer set upÂ….maybe.
As far as I can tell, the kW500 is a re-think of the Tri-Vista based on MF's experience with their kW pre-amp and power-amp monster separates. The phono section of the kW500 integrated is set up just like the Tri-Vista, for example. Hope this helps.