Just get a Power Acoustik A3000DB or a Lanzar Opti 2000D. Both amps will play .5 ohm all day and toss out over 2000 watts when needed. They are also under $300 new. So if you have dual 2 ohm L7's, you are good to go You shure about those amp options arnt the best quality dont want a crappy single and clip your subs to death. Audiopipe 3000d would be my option! have a little more power running to your subs and turn your gain down lower so it wont send a clipping single out!