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Replacement valve kit For Marshall JCM900 4500

Marshall JCM900 4100

Looking for great sounding valves for Marshall JCM900 4100 amplifier? Great – welcome to Amp Valves. You’ve come to the right place.

Valves for Marshall JCM900 4100 amplifier.

The Marshall JCM900 4100 amplifier uses:

  • 2 x ECC83 (also called 12AX7) preamp valves.
  • 1 x Balanced ECC83 for the phase inverter in position V3.
  • 4 x 5881 matched power valves/power tubes.

Note 1: This amp was also supplied with EL34 power valves so please check inside your amplifier before ordering.

Note 2: You may find that your power valves have been replaced with 6L6GC valves or similar. The 5881 valve is a type of 6L6 valve but click on this link to find out more.

Order your valves below and get your amp sounding better than ever.

So bring back the power and sparkle to your guitar amplifier. Treat yourself to a brand new set of valves today.

  • Best valves for the Marshall JCM900 range of amplifiers.
  • Each valve kit is carefully selected, fully tested and digitally matched.
  • We offer a choice of fast delivery services with full tracking and insurance. So you know they will arrive safely.
  • We ship internationally every day so order with confidence.

Replace the Valves on your Marshall JCM900 4100.

If you have any questions about replacing the valves for Marshall JCM900 4100 please drop us an email. We have over 30 years experience and so we will always be happy to help.

We also recommend that you take a look at our very useful FAQ section. Here you will find loads of tips on upgrading your tubes.

About the Marshall JCM900 4100 amplifier:

The JCM900 4100 was the next logical step on from the JCM800 Series. This particular amp is an authentic re-issue of the original JCM900 4100 which first made its debut in the early 1960s.

This is a two-channel, high gain plus reverb, 100W head with no solid state components. So it delivers that classic Marshall tone and is durable enough for regular gigging. The JCM900 4100 has many fans due to its wide feature set and huge versatility.

Channel A is voiced to be sparklingly clean on lower gain settings. This builds to a raunchy crunch when driven harder. Channel B meanwhile takes the gain even higher producing tones from silky smooth distortion to searing, saturated scream.

The Marshall JCM900 4100 is also equipped with a series FX Loop with its own Level control for use with rack FX or stompboxes.

Marshall JCM900 4100 Features:

  • Reissue of the beloved JCM900 all-tube head.
  • Incredibly powerful at 100-watts – not an amp that’s made to be played quietly.
  • Valves/Tubes: 3 x ECC83 preamp tubes and 4 x 5881 matched power tubes.
  • Series FX loop lets you switch effects pedals in and out, with a true bypass operation.
  • 2 speaker outputs for connecting extension cabinets.
  • Birch-ply construction. As a result, it is incredibly strong and ready for life on the road.
Tubes for sale for Marshall JCM900 4100. Order yours today and hear the difference!

So, if you’re looking for great sounding valves for your Marshall amplifier – you’ve certainly come to the best place.

Simply choose the complete replacement valve kit or the seperate valves for your amplifier below:
Why buy your new valves from Ampvalves?
all valves tested and digitally matched
  • Amazing Quality - All our valves have been tested to the highest possible standard using the best testing equipment on the market.
  • 100% Guarantee - All of our valves are fully guaranteed for complete peace of mind.
  • Soak Testing - All of our valves are soak-tested for 30 minutes to reduce failures after fitting.
  • Rated 5 Stars on Trustpilot
  • Awesome Tone - You'll hear the difference. A new set of tubes will get your amp sounding and performing like new.
  • Stunning Price - Our individual Valves and complete Amp Kits are competitively priced to ensure you get great value.
  • Superb Customer Service - We are always at the end of the phone to answer any questions you may have. We are all guitarists here and treat every customer as we would like to be treated.
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Stuart ukguitarampguy profile picture
Stuart ukguitarampguy
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I'm a Berkshire based amp tech and have fitted literally hundreds of valves sold by Ampvalves. Always reliable and I get a personal servivce too if I have any queries. Very good company in my view.
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Isabelle Worthington profile picture
Isabelle Worthington
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Great service , friendly and helpful very knowledgeable. Thank you so much amp now working as it should.
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Anthony White profile picture
Anthony White
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Absolutely brilliant service from Ampvalves.co.uk I will not hesitate to use this excellent company again. Easy website to navigate, with valves arriving well packaged and on time. Ampvalves provide a service I've not experienced for years. Try them. You wont be disappointed.
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Steve profile picture
Steve
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New valves arrived today from Ampvalves. Awesome. I loved the sound of my Victory V40 when I bought it new - and now it's even better. Great valves and superb customer service. Highly recommended.
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Alex Fischer profile picture
Alex Fischer
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I recently purchased a replacement tube set for my Line 6 DT25 Head amp from Ampvalves. The website is very user-friendly and makes it easy to find the perfect tube set for your amp. Due to an error by the parcel service, my shipment did not find its way to me. After contacting the support, I was helped immediately and competently. The quality of service was truly exceptional and exceeded my expectations. A special thanks to Barry Tyler. Hey Barry, you did a very good job. The tube set arrived afterwards in excellent condition, exactly as described on the website. The quality is remarkable. It’s well worth the money for their high-quality tubes. I highly recommend the tubes from Ampvalves. Also, my amp gives grateful feedback with a wonderful fresh sound. Alex from Switzerland
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Max Bevan profile picture
Max Bevan
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Will never buy valves anywhere else. Incredibly well set up website to find the correct tubes. Very well priced and very quick delivery. Will be recommending to everyone! Thank you!
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David Dawkins profile picture
David Dawkins
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Amazingly helpful, truly above and beyond with their customer experience. I was pretty stuck, through my own fault, and still they went the extra mile to get me back up and running. Thank you so much.
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kev herbert profile picture
kev herbert
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Cant fault them extremely helpful & prompt with delivery.
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Steven Wilson profile picture
Steven Wilson
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Excellent place to grab your amp valves. Great choice of valves, amazing customer service and prompt responses to queries via email. I was unsure of the best valves to use for my amp and sound, they gave me great advice. When I ordered the valves I used the wrong delivery option and they even sorted that out for me. Highly recommended.
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