5751 (12AX7) Tube GE Triple 3 Mica 1958 Test Good 100 / 72
Item History & Price
| Reference Number: Avaluer:51389230 | Model: 5751 |
| Brand: GE | Country/Region of Manufacture: United States |
| Year of Manufacture: 1958 | Type: Preamp Tubes |
5751 (12AX7) Tube GE Triple Mica 1958 ~ Test Good
This single 5751 9-pin miniature dual triode preamp tube has been stored away for years. Made by General Electric in the U.S.A. This is a ruggedized computer-rated version of the 12AX7 with mu reduced to 70, heater raised to 175mA per section. Pinched grey plates, triple mica, copper posts. Red printing is smeared, date coded ?8-21. White boxed.
Tube tested within the “good” range on my Hickok tester: 1250/900 in m...utual conductance where 1250/1250 for Triode 1/Triode 2 is average new, no shorts. Only one piece available.
![1956 Rca True 5751 Amplifier Tube Black Plate 3 Mica [] Getter 12ax7 Over 100](https://pic-l.avaluer.net/imgstmb/h/a/b/p/x/-1956_rca_true_5751_amplifier_tube_black_plate_3_mica__getter_12ax7_over_100-1_52_tmb.jpg)
![1956 Rca True 5751 Amplifier Tube Black Plate 3 Mica [] Getter 12ax7](https://pic-l.avaluer.net/imgstmb/h/a/i/n/x/-1956_rca_true_5751_amplifier_tube_black_plate_3_mica__getter_12ax7-1_52_tmb.jpg)
![1950s Rca True 5751 Amplifier Tube Black Plate 3 Mica [] Getter 12ax7 Over 100](https://pic-l.avaluer.net/imgstmb/h/a/s/r/y/-1950s_rca_true_5751_amplifier_tube_black_plate_3_mica__getter_12ax7_over_100-1_52_tmb.jpg)
