You have got a great quality Vox AC4 valve amp. It needs and deserves top quality replacement valves to revive the lovely tone.
This kit is all Russian quality valves tested to USA Dept of Defense Standard Mil 133 Revision ( the latest spec) and the kit contains two Sovtek 12AX7WA and a Sovtek EL84. We fully test these valves to ensure you receive the best.
The Sovtek 12AX7WA is very low microphonics and is a medium gain valve. The result is a rich tone great for playing rock with just the right amount of amp distortion Many amp builders demand Russian valves as they are reliable and sound superb. If you want a more subtle tone then check out our other kit.
We test your valves on AVO testers and they are run at the voltages seen in your amps