6550 tube availability

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I do self-employed computer service--I did an MSblast repair for a guy last week and noticed a Dynaco Mark III in the corner of his garage office. I told him it was worth something and I'd be willing to barter, and he said take it, I wanna get rid of all that crap. So I took it and gave him $50 service credit anyway. It's got some corrosion on one side of the chassis and cage. The innards and xformers are are clean. It's got the original Dynaco-labelled 6550 amp tubes, but one is toast. The other tests very strong on my Precision 660, though I can't grade it.
Mark III's are bringing good prices on Ebay, and I'd like to mint it out and sell it to finance other unfinished projects. Does anyone have some advice on tube replacement? Should I search out a single used Dynaco-branded 6550 or buy a pair of new EH tubes (I think JJTesla makes them too)? Where can I get the best deal on a matched pair of 6550's?

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Topic - 6550 tube availability - Coblio 21:23:45 09/01/03 (5)

Re: 6550 tube availability - Micron 01:59:58 09/03/03 (0)

and the Holy Grail of 6550's is... - Bill Way 16:06:01 09/02/03 (0)

Re: 6550 tube availability - EBerlin 10:26:44 09/02/03 (0)

Re: 6550 tube availability - Chris O 06:22:53 09/02/03 (0)

Re: 6550 tube availability - ShiFtY1000 00:11:12 09/02/03 (0)

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