well right now i have kicker 370 goging to 2 12''kicker comps and i just bought a JL500-1 and 2 12'' pheonix golds but i wanted to put an amp on my highs
lol in summary because im being nice and dont feel like flaming (this time) a mono amp plays 1 channel, if u wanted to run ur highs u need at least a 2 channel (left/right) unless u want all ur speakers to play only 1 side, then fine go for it.