If you are looking for trouble you've come the right place. I possde this amp for 3 years, he worked for 4 nights in total. No EHJV and yet I'm careful of the people who leave the amps up to temprature before soliciting, more I hate to abuse the hardware, I have never "surexploitquot , in terms of power or impdance, the clip LED never stay long flash. At the quatrime use all the transistors of channel A jump I have done rpar ( 150 big mistake on my part!) when I rcupr He walked two times one quarter of its power and all the transistors of channel B break. Since it is in my attic and it is the best. And we are far from the power ad to demonstrate a system that I have power which works 2X150 watts and I can tell you that it outperforms the 2x 400 Watts with Boost. Do not mean to sound it's always for money. The miracles exist that Lourdes. My advice to give, before the acherter PA hardware, Listen to the tural conditions of use and do not be fooled by avalanches watts low price, we all have done at least once.