JJ Electronics 12AY7 Vacuum Preamp Tube T-12AY7-JJ

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.

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