PHASE LINEAR 400 SERIES TWO AUDIO STANDARD AMPLIFIER PROFESSIONALLY SERVICED THIS UNIT HAS BEEN FULLY SERVICED WITH EVERY TRANSISTOR DIODE AND CAPASTOR HAVE BEEN CHECKED FOR PERFORMANCE THIS IS A RARE UNIT WITH THE FUSES IN THE FRONT OF THE AMP RATHER THAN THE REAR FOR A PRO AUDIO SET UP AND THIS UNIT HAS LOTS OF WARE AND TEAR ON ITS FACE THE REST OF IT LOOK GREAT FOR THIS HEAVY TANK OF A AMP....