Ruby 12AX7AC7 HG

The Ruby 12AX7AC7 HG High Grade is a sino chinese tube made in the Shuguang factory. It's very warm and sweet, with great overdrive. This tube has Mullard style plates, also marketed as the TAD 7025-S and the "Preferred Series 7025". They're back!! Same as TAD 7025-S, Preferred Series 7025 and Gold Lion Standard pin 12AX7.