I am the original owner of this great little pair of JR mono block amps. The serial numbers are MB486/7. I have looked them over and they look good to me and I have really examined them. I would rate them 8/10 because of some minor scratches on the top of the units. The fronts look good and hardly were ever touched since the on/off button and all other things are on the back. The bottom plates do have scars from where they were sitting on top of brass footers. They work great and have never given me a moment's problems. The Audiogon Blue book is $2800 and I am asking $2500. Based on what I have observed on Audiogon, these amps sell very fast.
my email address is: Kent@thehubltd.com