- JJ Electronic power tubes often used in instrument amplifiers.
- Matched sets available.
- Similar to and often interchangeable with EL34.
- Octal base.
- Made in Slovakia.
These tubes (check manufacturer documentation) usually are a drop in replacement for an EL34. However they sound more similar to a 6L6 type tube. Less of a harsh high end when compared to the 6L6; it's slightly warmer sounding.