A friend has a Henry Linear Amp and the tube has died. I'm posting for him. He needs a replacement. It's an Eimac 3CX3000A7. Preferably new, but would consider known good used. Also what do folks know about the Svetlana 3CX3000A7 or the Chinese tubes? Svetlana claims that it's an exact replacement for the Eimac tube. Thanks, -John =========