Well it has happened. I have to completely agree with Millercarbon on this one, and jnorris, and jnovak, stereo5, etc. It's a sunk cost. Sell it to someone who doesn't care about audio quality, get as much money as you can, then move on.
10lbs of awful and 50lbs of awful are still "awful". I am not sure why people are suddenly enamoured with 70's / early 80's era receivers. They were not that good then, and no matter how many parts you upgrade, you are not going to fix fundamental flaws. New cables would just be painting the proverbial pig, and throwing good money after bad.
Agree with jnovak, the MRX710 will sound better, heck the MRX300 probably will.
10lbs of awful and 50lbs of awful are still "awful". I am not sure why people are suddenly enamoured with 70's / early 80's era receivers. They were not that good then, and no matter how many parts you upgrade, you are not going to fix fundamental flaws. New cables would just be painting the proverbial pig, and throwing good money after bad.
Agree with jnovak, the MRX710 will sound better, heck the MRX300 probably will.