Just picked up some L220s. Long story short, the sound is fantastic. I am however, wondering if I am under powering them. I am currently running a JBL 6290 power amp. The sound is good but there is a fan. I've been intrigued by some of the more powerful Crown professional amps like the Macrotech 2400 or the even larger 3600vz. I would love to try out a macro reference or studio reference but from what I'm reading, I can get similar performance from the macro tech line for about half the price. Am I leaving anything on the table sticking with 300 W per channel? I know the macro line also has fans but if there is a sonic improvement to be had, I'd be up for a switch.