The JJ Electronic 12AY7 is a low microphonic tube built in the same rugged fashion as all JJ preamp tubes. This tube offers the classic warm 12AY7 sound with rich and balanced harmonics when pushed enough to break up. It’s a great choice for authentic tweed tones but can also help clean up amps when used in place of a 12AX7. Additionally, the JJ 12AY7 is a great replacement in 6072 microphones.

For a Performance Tested or Matched version of this tube, see T-12AY7-JJ-GX.

Product Measurements

Filament Voltage (Uf): 6.3 / 12.6 V
Filament Current (If): 300 / 150 mA
Plate Voltage (Ua): ≤ 300 V, 250 V typical
Plate Current (Ia): 3.0 mA
Grid Voltage (Ug): ≥ -50 V, -4 V typical
Transconductance (S): 1.75 mA/V
Gain (μ): 40
Internal Resistance (Ri): 22.8 kΩ
Plate Dissipation (Wa): ≤ 1.5 W
Cathode Current (Ik): ≤ 10 mA
Heater to Cathode Voltage (Uk/f): ≤ 90 V
Capacitance, Grid to Filament: 1.6 pF
Capacitance, Plate: 0.33 pF
Capacitance, grid to plate: 1.7 pF