Parting out a vintage Marantz 2245 receiver. I acquired this unit with so many parts missing that is wasn't worth trying to buy them all and restore the unit. So I am parting out what is left. Both power amps are in excellent condition, and 100% functional. Power output is just over 50 watts per channel contrary to the receiver spec at 45 watts. According to the service manual, it is called P750. The Marantz part numbers are YD2819007,YD2819009, or YD2818007. I cannot find any markings, so I do not know which of these three part numbers is correct.