The EH Valve Kit 4x 12AX7 2x EL34EH improves the tone of 40-50 watt amplifiers, including Marshall, Rooster, Selmer and Laney. These valves deliver offer rich tone perfect for all styles of rock.
These valves are hand-tested and matched on our custom testers to ensure maximum quality. This comes in addition to factory pre-matching of the EL34EHs. Matched for anode current and Gm at real amp operating voltages including audio testing. We test every valve we sell. Valves are run our custom testers which also checks for noise and microphonics.
EH manufactures their valves in Russia to the highest standards under the US Dept. of Defense Military Standard 213 Revision D. (Yes, the USA military still uses valves and keeps their test specifications up to date!)
Includes 180 day warranty for faulty workmanship.
A Note for Marshall JCM2000 Owners
The Marshall JCM2000 is a modern classic, and many are still working hard on stages and in studios. But as these legendary amps age, the original PCB boards can develop increased noise and stability issues, particularly around bias.
Using modern design tools and manufacturing methods, we’ve developed a drop-in replacement PCB for JCM2000 amplifiers that preserves the original circuit and tone, while improving long-term stability and noise performance.
If you're rocking one of these tone machines, this is the upgrade for you.
