Your Sophia Electric mesh plate 274B is the best rectifier tube I have ever heard including the actual Western Electric 274B. This is quite an accomplishment and you should feel very good about this. I let my Canadian distributor hear it in his Sira and he refused to let me have it back. So, now I have only the one left and it must go to a customer soon. So, I will be ordering more. I will also recommend them to anyone who buys one of our preamps.
Fred Volz
Emotive Audio