2 SYLVANIA Gray Plate O Getter JAN 5814A Tubes, Maxi-Preamp II Tested NOS SM1356
USD 33.46 USD
Specifications
| Country Of Origin | United States |
| Brand | SYLVANIA |
| Type | 12Au7 |
Gain (NOS Value=17 mu) 17.0 mu 17.6 mu. Gain (NOS Value=17 mu) 17.8 mu 17.5 mu. Tested on a Hi End Maxi-Preamp II tester for Gain (Mu), Transconductance (Gm), and Noise (dB).