From the early ‘70’s, this 45 pound QRX 6001 heavyweight does a terrific job running either 2 or 4 speakers. Known for their excellent 4 channel decoder circuits, this receiver has Lots of power, lots of inputs, and will hypnotize you with its green glow front panel. I’ve had it for a number of years, but have now upgraded to a 7001, so I clearly like how these perform. It’s been serviced and needs nothing but 4 speakers and a turntable, so the “golden age” is awaiting you…..