Biamp Low frequecy amp recommend

Other suggestions are good and I would also add Aragons.

It's might not be as easy as you think to plug in a different amp as you might think. There have been discussions on biamping before that should be browsed.

Thanks for the replies. Ive Biamped several times before.
When I was running my 801#3 with a krell ksa250, i went to the local shop and for fun I brought home a pair of 565 adcom mono blocks to compare to the 250, The 565 matched the krell stride for stride if not besting it in the lows with speed and control. Of couse the krell kicked it in the ass as far as natural presentation in the mids and highs adcom was steely sounding.Thanks for the replys.

All of the suggestions are reasonable. I would advise looking into the active crossover solution.

BTW........there is any number of "digital" amps that do quite well in the bass region. In fact, that may be what they do best.