- Tung Sol 5751.
- Replaceable with the 12ax7 / ecc83.
- Reduced gain over ecc83.
- Very reliable.
- Made in Russia.
These tubes are designed to tame an amplifier which perhaps is distorting a little bit too much. Seen as one of the best modern production 5751 tubes. Great tone and reliability. Often used (and rebranded) in Fender amps. Order 3+ for an auto 5% discount.