12BZ7 NOS

12BZ7 is a high-mu twin triode with the same pinout and voltage gain (mu) as 12AX7. It is essentially a higher current version of 12AX7. You can substitute 12BZ7 for a 12AX7, but 12BZ7 has much larger plate boxes and tend to be more microphonic than 12AX7.

We have various US made 12BZ7 in stock.