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12AX7 TUBE REVIEWS CHART



12AX7 comparison at a glance

Rated 0 - 5 where 0 is Unacceptable and 5 is Excellent

Grey rows represent discontinued and unavailable tubes.


Main 12AX7 / ECC83 / 7025 tube reviews page


We've compiled our findings into a chart that shows you rating scores for each vacuum tube's microphonics, noise, and musical detail/dynamics. This will help you narrow down the many options quickly, and get your tube amp performing great! When reading these results it's important to understand that the difference of 1 number increment is not typically dramatic. In many cases, the difference between 4 vs 5 is very hard to perceive. Overall, these 12AX7 preamp tubes are all great performer.


Tube Type
Microphonics
Noise(Hiss, Pop, Hum)
Musical Detail and Dynamics
Electro-Harmonix 12AX7EH
5
3
4
Gold Lion ECC83 / B759
4
5
5
JAN-GE 12AX7WA
4
5
5
JAN-GE 5751
5
5
4
JJ Electronic ECC83S
3
4
4
JJ Electronic ECC803S
4
4
4
JJ Electronic ECC83MG
4
5
4
JJ Electronic 5751
5
5
3
Mullard Reissue 12AX7
5
5
4
Mullard Reissue CV4004
5
5
4
Northern Electric 12AX7
4
5
5
Preferred Series 7025
5
5
5
RFT ECC83
5
4
5
Shuguang 12AX7A
3
4
3
Shuguang 12AX7B
4
4
3
Sovtek 12AX7WA
5
2
2
Sovtek 12AX7WB
5
2
2
Sovtek 12AX7LPS
3
4
5
Svetlana 12AX7
5
5
4
Tung-Sol 12AX7
5
4
5
Ei 12AX7 / ECC83
2 and 4
5
5
JAN-Philips 12AX7WA
4
4
5
JAN-Philips 5751
4
5
4
Sovtek 5751
2
5
4