Vacuum Tube - 12DW7, Electro-Harmonix
Electro-Harmonix 12DW7 dual triode preamp tube. Made in Russia.
12DW7 combines one triode of 12AX7 and one triode of 12AU7 in a dual triode package. System 1 (pins 6, 7, 8) is the high-mu 12AX7 triode and system 2 (pins 1, 2, 3) is the medium-mu 12AU7 triode.
Body Height | 1.9375 in. | ||
Capacitance, grid to plate | 1.7 pF | ||
Capacitance, input | 1.8 pF | ||
Capacitance, output | 2.0 pF | ||
Cathode Current (Ik) | 22 mA | ||
Grid Circuit Resistance (Rg), Fixed Bias | 0.25 MΩ | ||
Grid Circuit Resistance (Rg), Self Bias | 1 MΩ | ||
Grid Voltage (Ug) | -55 V | ||
Heater Current | 300 mA / 150 mA | ||
Heater Voltage | 6.3 V / 12.6 V | ||
Heater to cathode voltage (Uk/f) | 200 V | ||
Item Diameter | 0.875 in. | ||
Item Height | 2.1875 in. | ||
Plate Dissipation (Wa) | 1.2 W | ||
Plate Voltage (Ua) | 330 V |
Packaging Dimensions | 2.75 in. × 1 in. × 1 in. | ||
Weight (Packaging) | 0.0353 lbs. |
Specification Sheet | All Models |
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