If I'm not mistaken the 500/1 is a sub amp, 500 watts for 1 channel. I run the six channel JL for mid/highs, 4 pairs, in our boat and a 500/1 that feeds 2 JL12"W1's. I think the 1000/1 would definately power your subs. As for what amp is the best for 6 pairs, I defer to the experts...