Sea,
I happened to visit their site 2 days ago. They have a scratched amp for $379. The price is great it originally sold for over $600 and had a list price of close to $1000.

I don't know about the 83 lbs. I also want to know if it has digital effects and can they be set separately on each channel. If you'd like to email me please feel free to do so.
Thanks Boo