Iv been playing for about 5 years now and iv upgraded equipment a few times. I went from an Ampeg svt5pro to a mesa400+. Overall, this was a good choice. I enjoy the sound much more from the mesa. I just upgraded my speaker cabinet, or downgraded, whatever. I went from an Ampeg 810E to a Carvin BRX 10.4NEO. Now the difference is about 400 watts RMS. The Carvin handles 1200w whereas the Ampeg handles 800w. The question is: will i need to get a power amp to help support the mesa and not underpower the cab?