# 12AU7

> miniature medium-gain dual triode vacuum tube, probably the first Noval (B9A) tube ever

**Wikidata**: [Q4548668](https://www.wikidata.org/wiki/Q4548668)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/12AU7)  
**Source**: https://4ort.xyz/entity/12au7


## References

1. [Source](https://www.radiomuseum.org/tubes/tube_ecc82.html)
2. [Source](https://www.radiomuseum.org/tubes/tube_12au7.html)