12AX7

My personal idea on 12AX7 tubes are listed below in terms of musical quality decending order.

1. Telefunken ECC803S
2. Ryatheron 7729 gold Pin 1950s'
3. Telefunken ECC83
4. Marconi 339
5. Telefunken 12AX7 ribbed grid
6. GE 5814WA
7. Mullard 12AX7 Long grid
8. Tungsol ECC803S
9. Sylvania 5751 1950's
10. Telefunken 12AX7 smooth grid

Feverip