I have a GK 1001RB-II and believe it to be very under-rated as far as its wattage. I played a 4-Pro through a SWR Megoliath, and was rather disappointed with the output (EQ set flat, gain fairly high). Then I played my GK through the same cab at the same venue, with its EQ set flat, the woofer knob at noon and the input volume around 3 o'clock, the GK absolutely crushed the 4-Pro. Volume and tone-wise. I know this isn't related to a 7-Pro, but just wanted to point out the wattage inflation.