Add to Cart Quick view Shu Guang (2) 810 Vacuum Tubes, High Power Transmitting Triodes NOS Shu Guang MSRP: Now: $89.99 Was: This Shu Guang (2) 810 Vacuum Tubes, High Power Transmitting Triodes NOS are unbranded and made in the same factory as all the other 810 tubes in China. They are both date Code 2005. **All the... MSRP: Now: $89.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $89.99 Was: Subtotal: Add to Cart