I was never particularly impressed with this amp, but I suspect $300 isn't too far from the going price if you buy it, though I wouldn't buy it even it were less.
A volt meter isn't going to tell you much. The biggest issue with older amps are the big capacitors in the power supply as they can deteriorate with age. A better check would be to listen to check for any hum or other sonic issues. Only a tech with more equipment can check things in more detail.
A volt meter isn't going to tell you much. The biggest issue with older amps are the big capacitors in the power supply as they can deteriorate with age. A better check would be to listen to check for any hum or other sonic issues. Only a tech with more equipment can check things in more detail.