12AX7EH has a good amount of gain but with lower microphonics. It does especially well in guitar amp application where good bite with definition is wanted.
For phase inverters, triode matched is recommended.

Price is for a single triode matched 12AX7EH. Recommended for replacing phase splitter drives the power tubes.

Price is for a matching pair of 12AX7EH.

This is a premium version of 12AX7EH. Gold plated pins assure better contact, a definite plus for gigging musicians and vintage HiFi amp users alike. Quiet, smooth and excellent for use in both HiFi and guitar amps.

Price is for a matched pair of 12AX7EH Gold tubes.

Newly released Russian Issue TungSol 12AX7. This tube is a new design, manufactured at Reflektor factory in Russia.

The price is for matched pair of Russian Issue TungSol 12AX7.

Sovtek's 12AX7LPS is the best choice for HiFi Audio with excellent sonics. It has a long ribbed plate derived from Siemens design, with a filament that works with both AC and DC supply.

The price is for a matched pair.

Russian reproduciton of Mullard 12AX7. Excllent all rounder.

Price is for a matched pair of Russian reproduciton of Mullard 12AX7.

The OEM workhorse tube used by major amp manufacturers, with warm round tone. Very low in microphonics, and is excellent for use in guitar amps. You can hit it with a stick and it'll barely bat an eye. This is very important for combo amps, or for high volume application.

12AX7WB is the higher gain version of Sovtek 12AX7WA.

Sovtek 12AX7WC is even higher gain version of Sovtek 12AX7WA/WB.

These are higher gain version of 12AX7C9 with shiny silver anode. It has a bit more bite than C9 in guitar amps.

Please note that recent version of 12AX7B comes with grey coating on anode.

Brand new release from JJ, this is a re-issue of Tesla long plate ECC803S.

Brand new release from JJ, this is a re-issue of Tesla long plate ECC803S. Price is for a matching pair (2 tubes)

Another new release from JJ, this is the gold pin version of long plate ECC803S

Matched pair of ECC803S JJ Gold Pin

This is the gold pin version of standard TungSol 12AX7. Made in Russia.

Price is for a matched pair of TungSol ECC803S Gold tubes.

Derived from rare Telefunken design, it gives out nice, rich harmonics in guitar amps. It also does very well on audiophile or recording application. It's quiet and low in microphonics due to short plate design and thick glass.

Price is for hand selected matching pair of JJ ECC83S.

TRIODE, DUAL
Newly released from JJ, this is the gold pin version of ECC83S. Very low microphonics and tight tolerances.

Price is for a matched pair of ECC83S JJ Gold

This is a unique and original 12AX7 from Groove Tubes. They closely re-created the famous Mullard 12AX7. In a guitar amp, 12AX7M delivers rich harmonics when pushed, and also provides good clean tone headroom. 12AX7M is also gaining a lot of following in the HiFi for its smoothness and balance.

12AX7C9 is made by Shuguang factory in China. It has higher gain than any other 12AX7 tubes produced today, and has tight tolerance and consistent quality. Excellent in guitar amps if you want great deal of distortion.

Tubes are either unlabeled or marked as 12AX7A, and shipped in a white box.

See 12AX7B which is a newer version.

Factory selected, gold pin version of Ei 12AX7. Just like the Ei 12AX7 Silver Bullet, these tubes can be microphonic for use in guitar combo amps. But they offer extended clear highs and sweet mids that are unrivaled in HiFi audio applications.

There are silver and grey plate versions. Picture shows grey plate version.

Superb sounding 12AX7 that follows in the footsteps of flat plate Telefunken design. Ei 12AX7 excels in Audiophile application at an excellent price point. Note that some Silver Bullets will be marked ECC83 instead of 12AX7.

Excellent sounding 12AX7 from SED (ex-Svetlana) people with Winged-C logo. The filaments are not spiraled, which means it may pick up too much hum in amps with AC filament circuit. Most recent audio amps have DC filament so this is not a problem.

Factory selected gold pin 5751 from Electro-Harmonix. This is the premium version of the superb sounding Sovtek 5751 and 12AX7LPS series tubes.

Price is for a matched pair of 5751 EH Gold.

Same construction as 12AX7LPS. Often used in first stage of HiFi power or headphone amplifier. On guitar amps, this tube can be substituted for 12AX7 with subdued gain that gives out that wonderful bluesy tone.

Price is for a matched pair of Sovtek 5751.

TRIODE, DUAL
Sylvania made from the 1970's. These are some of the last US made from the wonderful 70's with big, round tone.

One of the top choices in guitar amp. Also does very well in audiophile application.

Price is for a matched pair of 5751 JAN NOS.