I HAVE A ACURUS A-150 IN MY SHED,I HAD IT ON MY SYSTEM UNTIL I PICKED UP MY 5 CHANNEL MARANTZ,GOOD AMOUNT OF POWER,NO PROBLEMS -(BESIDES THE THE FLICKERING LIGHT ON THE POWER BUTTON)- IT HAS BEEN DEALING WITH TEMPS FROM ABOUT 0 TO 120 DEGREES F-ITS A WELL BUILT AMP-IMO.....RON