My Mtx Jackhammer 600 class d amp gave up the dream last week. I took it a part and have a feeling the fan failed causing the amp to burn up. Anyway I was on amazon looking for a new amp using prime. I see they have the sound stream rubicon 1100.1 for $162 and that is not prime shipping The 1600 watt rubicon is $217 dollars. I could have it for $60 more dollars. My subs are 400 watts rms a piece. I wanna put 800 watts to them. I could spend as much as $300 if I need to. I was looking at this one also Rockford Fosgate P1000X1d. $289 dollars for it. What do you guys think. I need an amp that will last. The jackhammer amp lasted about 2 years.