My G/F loves music, but never really appreciated it for what it is until she met me
I get no questions about why I buy the gear that I buy.
If you use 2 separate stereo amps to power your fronts it can make a difference in power, +3db. You double the wattage you should only get 3 more decibels.
Yes, but there are two additional things going on when you use separate amps 1) each portion of the speaker is being handled separately, so in reality your headroom is MUCH greater and 2) 3dB
IS noticeable when you're talking about headroom. There are also 2 ways to biamp - vertical and horizontal, for balanced amp loading. With really tough to drive speakers, biamping can be a benefit, but for the 40s, a solid 2ch amp would be enough to drive them adequately. My receiver was enough to drive them at near ref levels for 3 hours.