Don't buy any gear off eBay, its too risky. A month ago I purchased a Dynaco ST-70 on eBay from an individual that regularly sells modified ST-70s here on Agon. He described in great detail in the ad that the unit was in totally excellent condition. It came with switches broken (no parts in box), wiring that was not correctly soldered or not soldered at all, and a quad of new EL34's of different brands. I guess he puts his bad units on eBay so he can hide behind the eBay curtain and he refuses to answer emails. Haven't received it back from the repair shop yet.