I just won an Ebay Auction for DR#670. I paid 1225 USD for it, do you think i made a good deal ??? I though such an early model would go higher, and it has a chrome chasis, not black, so it is kind of a custom amp. I've been playing #11950 for 7 years now and love it. I know it is not a Pre-500 i just bought but i hope to get an even better tone with this early model. When i have it i will A/B test them and let you know about it