Vacuum Tube - 12AX7WA, Sovtek
9 pin miniature preamp tube (Amplification Factor = 100). This Russian tube has strong lows and bright highs. Its lows demand attention when playing full bar chords. In overdrive, it offers a lot of crunchy fizz. For more information about our 12AX7 tubes, see our tech corner article on 12AX7s.
RoHS Compliant
Accessory Items:
| Amplification Factor | 85 -110 | ||
| Bulb Temperature | 95°C | ||
| Capacitance, Plate to Plate | 0.4 nF | ||
| Capacitance, Transfer | 0.55 nF | ||
| Capacitance, input | 2.15 nF | ||
| Capacitance, output | 1.9 nF | ||
| Cathode to Heater Voltage | 100 V | ||
| Grid Reverse Current | 0.2 μA | ||
| Heater Current | 305 / 153 mA | ||
| Heater Voltage | 6.0 - 6.6 V / 12.0 - 13.2 V | ||
| Plate Current (Ia) | 10 mA | ||
| Plate Dissipation, per triode (Wa) | 1.0 W | ||
| Plate Voltage (Ua) | 300 V | ||
| Transconductance (S) | 1.4 mA/V - 2.65 mA/V | ||
| Packaging Dimensions | 1.1 in. × 1.1 in. × 3.1 in. | ||
| Weight (Packaging) | 0.0375 lbs. | ||
 Specification Sheet | All Models |
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Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
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Product Reviews
These tubes sound great in all my amps. Durable and no problems with microphonics.
Probably the most rugged current production 12AX7. This tube is my first choice for cathode follower positions in guitar amps. You just can't kill these things.
These tubes are very close to the old GE version. I like switching pre-amp tubes on my tube amps and These work great. Also, I do trust Antique Electronic Sully. Good people.