yesterday I went to a local comp and i did a 135.9 on a sealed cheapass prefab lol w/ the txx, im a bit dissapointed with the score but the box sucks lol and i was using an ipod to meter so i wasnt getting a lot of input voltage into the amp...the amp does GREAT on music it is a lot louder than my last setup but not good on the meter because of the damn box lol, i also tryed 4 coustic 12s and did a 138.sumthing lol to test the amp at 1 ohm and it was LOUD it was even hard for me to breath in there during the pass but w/e ill do a box and hopefully get my score up , I also did bassrace 120-129.9 and i won yay and i took a stetsom 4 channel amp so it wasnt a bad night after all. i LOVE the amp lol super efficient even at 1 ohm i didnt get a big voltage drop, i think the drop was from 14.1-13.8 Great amp now i wanna buy a second one and strap it ill post pics of the sub in a sec so u see the typo of prefab...we call them here dog houses