Some of the info above is not accurate. Anyway, I’m not sure it would be worth it and this is coming from someone who’s bi and tri-amped for 40 years. Your B&Ws are a relatively easy-to-drive load averaging around 6 ohms with a complementary manageable phase angle and you’ve got a great amp with plenty of power with somewhere around 300 watts RMS at that impedance. You have adequate power.
First, to go active line-level bi-amping, you must be able to bypass your passive speaker crossover components or the whole effort doesn’t work. Finding a good active XO and bi-amping is going to be expensive. Even if you can, to dial it in properly and match signal levels, you must use measurements - dozens of them. You can’t do it by ear unless you can hear .5dB changes. You should use the same amp which you are considering-good. The whole thing’s very fiddly, time consuming, and frustrating to get it right. Done improperly, it’ll sound totally worse.
Don’t take my word for it, check out what Jim Smith (Get Better Sound) has to say about it. I learned this the hard way because I did it wrong for more than a decade. My system never sounded right. To see what it takes to do it, check out my system comments from 2012 to 2015 and read the trials and tribulations, then go spend your money on something more fun and effective.
First, to go active line-level bi-amping, you must be able to bypass your passive speaker crossover components or the whole effort doesn’t work. Finding a good active XO and bi-amping is going to be expensive. Even if you can, to dial it in properly and match signal levels, you must use measurements - dozens of them. You can’t do it by ear unless you can hear .5dB changes. You should use the same amp which you are considering-good. The whole thing’s very fiddly, time consuming, and frustrating to get it right. Done improperly, it’ll sound totally worse.
Don’t take my word for it, check out what Jim Smith (Get Better Sound) has to say about it. I learned this the hard way because I did it wrong for more than a decade. My system never sounded right. To see what it takes to do it, check out my system comments from 2012 to 2015 and read the trials and tribulations, then go spend your money on something more fun and effective.