The 250 sigs should be good. I ran my Mini Grands full range with the VTL MB-125s in tetrode (w/out the subs) and they were fine but couldn't handle them in triode (60WPC = N/G). You can always run a fast sub like a Rel through an external crossover like a Paradigm X-30 or an NHT X-2 and lighten up the bottom end of the woofer panel somewhere between 50 - 80hz or so but be sure you're at least 12-18 db per octave [as these crossovers are] and this will relieve the VTL's hardest job. Careful speaker AND subwoofer placement and integration is key but results become phenomenal. Good luck. BTW: Hi Dave, Grant