Yes, I think, well I know, there are some “objectivists” who churn through gear or spend huge amounts of money chasing measured “technical” superiority that goes well beyond the thresholds of audibility. Some of them are very knowledgeable and will tell you this themselves. I am persuaded that there is some considerable merit to buying an amp or a receiver designed to drive the type of speakers you have and with a good chunk of headroom. That extra headroom might commonly cost an extra $100 or $150 in my experience. Otherwise for my tastes the extra moolah is best spent on good speakers, EQ with room correction, surround sound, and, absolutely, two quality powered subwoofers. Since they take on a heavy load. i.e., the low frequencies, I would think the subwoofers would be a way of providing for more headroom for the amp to drive the passive speakers. Crank this!!!