Best replacement valve kit for Marshall JCM800 4104 amplifiers

This replacement valve kit for Marshall JCM800 4104 amplifiers will get your amp sounding better than ever. The best value for money amplifier valves on the market today.

This superb valve kit comprises:

• 2 x Selected Premium Grade JJ ECC83 preamp valves (also called 12AX7).
• 1 x Selected Premium Grade JJ Current Balanced ECC83 for the phase inverter in position V3.
• 2 x Selected Premium Grade Marshall Matched EL34 power valves/power tubes.

Around 1982-1983 this amp was also suppled with 2 x 6550 power valves (possible due to a shortage of EL34s?) so please check what is inside your amp before you place an order.

Marshall power valves for Marshall amplifiers

All of our power valves are original Marshall valves, branded and fully tested. Every valve is guaranteed.

So treat yourself to a brand new set of incredible sounding valves today. They will restore the power, tone and clarity to your Marshall guitar amplifier.

1. Amazing tone. Surely this is what matters most. The number one priority for any guitarist has to be the tone. Warm, rich, fat and juicy are the words that best describe the sound from these valves.
2. Sustained valve/tube power to make the most of every stage in the amplifier chain. It is the balance between volume and tone that distinguishes a really great valve from a mediocre valve.
3. Long valve life. Guitar amplifiers have to be built to take the knocks. This is also very important when it comes to the amplifier valves themselves.

Do you have any questions about this valve kit?

If you have any questions please drop us an email. We have more than 30 years experience so we are sure we can help.

Please check out our FAQ section first though. Here you will find the answers to most questions as well as some useful tips if you have never upgraded your tubes before.

The best replacement valve kit for Marshall JCM800 4104 amplifiers on the market.

• Every kit is carefully selected, fully tested, digitally balanced and matched before we ship to you.
• Our valves have the highest quality control, minimal noise and extremely low harmonics.
• Marshall’s reputation for quality, superb tine and long life is legendary.
• We have a range of fast delivery options with full tracking and insurance. So you know they will be delivered safely.
• Global delivery – we ship all over the world.