1 x 7025 12AX7WA (ECC83) Valve / Tube – Sovtek NEW TESTED

Sovtek 12AX7WA preamp valve


In Stock

491 in stock

All single valves, matched pairs and matched quads are fully tested in our warehouse before dispatch. These valves will guarantee awesome tone and amazing power. You WILL hear the difference. So get your amp sounding better than ever. Order your replacement valves today.


The Sovtek 7025/12AX7WA preamp valve can be found in a huge number of amplifiers. It is the favourite of many amplifier manufacturers including Fender who re-brand it as their Groove Tube GT-12AX7R.

1 x Sovtek 7025/12AX7WA preamp valve

They are brand new, carefully selected, graded and digitally tested before they leave our warehouse.

  • Selected Premium Grade valves that are carefully chosen, fully tested and digitally graded to ensure the best performance.
  • We offer a range of shipping options that include full tracking and insurance.
  • All of our valves are fully guaranteed.
  • We have over 30 years in the business so you are in very safe hands.
  • International delivery. We ship all over the world.

Understanding the difference between the Sovtek 12AX7WA, WB and WC preamp valves.

Unlike many valve manufacturers, Sovtek make three slightly different versions of the 12AX7 with slightly different characteristics.

This WA version has lower gain than the WC. It is worth pointing out that Fender use the WA version in amps like the Fender Blues Jr, Hot Rod Deluxe etc.

Fender rebrand them as Groove Tubes, but it is still a Sovtek 12AX7WA at the end of the day. The lower gain of this valve makes for smoother break up of the amp.

It also fair to say that it helps makes the Hot Rod Deluxe volume far more controllable. Many amps, including the Hot Rod Deluxe are either full volume or no volume and the 12AX7WA solves this and gives you a volume knob that actually works. If the valves in your amp have been replaced with typical high gain 12AX7’s you will find the 12AX7WA will get your amp volume working as it was designed to.

By comparison, the WB and WC versions both have high gain characteristics. Good for some amps of course but not for others. The WB is “darker” and good for taming bright amps. The WC is brighter and ideal for brightening up a dark amp. The differences are subtle but very noticeable.

Why choose Russian Sovtek valves over other makes?

The first thing to remember is that there are only five manufacturing companies in the World for valves. The amplifier manufacturers do not make valves. They simply rebrand them in their own name. It makes sense to buy the original valves (OEM) straight from the manufacturer rather than pay extra to get rebranded versions of the exact same valve.

Out selection processes and testing procedures are rigorous and we only sell the finest valves available.

You are guaranteed the best possible tone, power and performance from your amp when you choose these valves.

Why every guitarist should have at least one 7025/12AX7WA preamp valve as a backup

The ECC83/12AX7 preamp valve is used in just about every valve amplifier ever made.

Every guitarist should have at least one brand new spare in the drawer as a backup. When the preamp valves on your amp start to wear out you can then very quickly check to see if one of the preamp valves is causing the problem. If you gig then it is absolutely essential you have a spare preamp valve in your bag in case of emergencies. Every valve amp on the stage will have these inside and carrying a spare means you can recover from a potential disaster in a matter of minutes.

These Sovtek 7025/12AX7WA versions are high grade, robust and very long-lasting. They will work in any amplifier where the prefix starts with the letters 12AX7 (US name) or ECC83 (the European name for the exact same valve).

Additional information

Dimensions11 × 11 × 11 cm


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Sovtek 12AX7WA preamp valve

1 x 7025 12AX7WA (ECC83) Valve / Tube – Sovtek NEW TESTED