RCA developed the 12AX7 tube in the 1940s for general purpose amplification. Today, 12AX7 is the most common preamp tube used in guitar and audio amp due to its high amplification factor (mu).
We carry a large selection of 12AX7 tubes to help you get the right sonic from your gear. See our Best 12AX7 Review for top choices for your application.
We offer single and matched pairs. Matched pair includes two tubes that are matched to each other.
ECC83, 7025, CV4004 are the same tube as 12AX7. All current production 12AX7 are a drop-in replacement for any of these types. See All about 12AX7 Tube page for answers on common questions about 12AX7.
Single
- Shuguang 12AX7B Silver Dragon$11.50
- Electro-Harmonix 12AX7$12.95
- JJ/Tesla ECC83SOut of stock
- Sovtek 12AX7LPS$14.40
- Sovtek 12AX7WC$14.50
- Electro-Harmonix 7025EH$14.50
- TungSol 12AX7$14.90
- JJ/Tesla ECC803S$15.00
- Sovtek 12AX7WB$15.50
- Svetlana 12AX7SV$15.55
- Electro-Harmonix 12AX7 Gold$18.32
- Mullard 12AX7$19.00
- TAD 7025WA / 12AX7Out of stock
- Mullard 12AX7/CV4004$21.00
- Genalex ECC83 Gold Lion Standard PinOut of stock
- JJ/Tesla ECC83S GoldOut of stock
- TungSol ECC803S Gold$24.00
- JJ/Tesla ECC803S Gold$26.50
- Ei 12AX7 NOSOut of stock
- SED 12AX7 NOSOut of stock
- Ei 12AX7 Elite NOS$40.00
- Genalex 12AX7 Gold LionOut of stock
- Sylvania 12AX7WA JANOut of stock
- EI 12AX7 Elite Gold NOSOut of stock
Matched Pair
- Shuguang 12AX7B Silver Dragon Matched Pair$27.00
- Electro-Harmonix 12AX7 Matched Pair$29.50
- JJ/Tesla ECC83S Matched Pair$30.00
- Sovtek 12AX7LPS Matched Pair$32.80
- Electro-Harmonix 7025EH Matched Pair$33.00
- TungSol 12AX7 Matched Pair$33.80
- JJ/Tesla ECC803S Matched Pair$34.00
- Svetlana 12AX7SV Matched Pair$35.10
- Electro-Harmonix 12AX7 Gold Matched Pair$40.64
- Mullard 12AX7 Matched PairOut of stock
- Mullard 12AX7/CV4004 Matched PairOut of stock
- TAD 7025WA / 12AX7 Matched PairOut of stock
- Genalex ECC83 Gold Lion Standard Pin Matched PairOut of stock
- JJ/Tesla ECC83S Gold Matched PairOut of stock
- TungSol ECC803S Gold Matched Pair$52.00
- JJ/Tesla ECC803S Gold Matched Pair$57.00
- Ei 12AX7 Elite NOS Matched PairOut of stock
- Genalex 12AX7 Gold Lion Matched Pair$91.00
- Ei 12AX7 Elite Gold NOS Matched PairOut of stock