The JJ ECC82 tube type is equivalent to the American 12AU7 tube and can be used in any 12AU7 or ECC82 circuit.
These are premium tested on specialised digital and analogue testing equipment by Karltone as follows
- Gain (A)
- Transconductance (gm)
- Noise (dbv)
- Emission Quality
- Grid Leakage
Test results are provided with purchase