hello. I am looking to buy an older pioneer stereo receiver. an SX 750,850,950,1050,1250 or SX 780,880,980,1080,1280,1980 or SX 3700,3800,3900 or SX 727,828 or SX 737,838 939,1010 or SX D5000, D7000 or any integrated amp and tuner from the same era call Mark Let me know what you have!! thanks !!