12AZ7 NOS

12AZ7 has the same pinout as 12AX7, but with lower voltage gain (60 vs 100). 12AZ7 can be used in place of 12AX7 to get different sonics, and some McIntosh amps used 12AZ7.

The main application of 12AZ7 was RF amplifier and 12AZ7 can be microphones. If you would like to try 12AX7 in your guitar amp, we recommend low noise screening.