well for 200-400 dollars you probly wont get anything with a true rms power of 2,000 watts your best bet would be a rockford t1,000bd it pushes well over a thousand and rockford makes the best amps you can buy it sould be plenty to power your l7s just be carefull if you dont buy rockford and make sure what you get is cea rated thats the industrie standar on rating amplifiers ive seen amps that state 1000-4000 watts and when u get them home and look in the manual its only 300 watts rms hell even a rockford punch 500 would do the trick oh yea put those l7s in a ported box with 2.5 feet of airspace each and they will bang so hard my advice would be a super bass probox dont go with some pre made seald box that everybody does cause the box is the most impotand part of you setup i had 2 kicker cvr12's in thats superbass box o n 600 watts that beat harder than my buddys 4 15's on 3,000 watts good luck man