After a little party friday night and much loudness in the music i may have blown my amp. Its a Nad C350 and the volume was about 80% for about 4 hours straight and all was fine. However the next day i played a cd and with it around 50% the amp just shut off and the power light went red. It did that about a minute into playing and has done everytime i tried. Its fine under about 40% but anything over and it just stops. Does it sound like its fubared?