Rock Out with the Best Valves in the Business
Exceptional tone. Superior quality. Unbeatable prices.
Complete Revalve Kits 
Output Valves 
Preamp Valves 
Rectifier Valves 
Hi-Fi and Jukebox Valves Restore Your JCM2000 
Amp Parts 
Fire Up Your Amp with Our Best-Selling Tone Bottles
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JJ ECC83S Preamp Valve
From £18.24 -
ROS-2000 PCB For Marshall JCM2000 Amps
From £264.00 -
JJ Valve Kit 4x ECC83S 4x EL34 II
£170.90 (ex. tax: £142.42) -
JJ KT88 Matched Pairs & Quads
From £104.40 -
JJ KT66 Singles Matched Sets
From £48.43
Looking for a complete set of valves?
Crank Up the Feedback
Check out our latest customer reviews
Verified PurchaseConsistently good power valves by JJ thanks Valve Tube Guitar Amps
Verified PurchaseExcellent, quick and reliable service.
Good to hear it all worked out as it should do.
Verified PurchaseLovely hot glass !
Much warmer than a dead valve 🙂
Official dealer. Valves tested in-house. 180 day warranty.
Restore Your Marshall JCM2000
Bring your beloved amp back to life with our upgraded replacement PCB board
Available Now
Revive your amp and get rockin'!
The ROS-2000 replacement PCB board for Marshall JCM 2000 amplifiers is here.
A product of painstaking research, rigorous quality testing, and passion for Marshall's legendary rock machines, this drop-in replacement is everything you need to put your amp back in fighting form.
The ROS-2000 stays 100% faithful to the original JCM 2000 tone while improving component life and amp longevity.
Made in the UK. Rocks worldwide.
✔ Permanently Fixes Bias Drift
✔ Resolves Preamp Hum
✔ Reduces Noise
✔ Restores Tone
✔ Built to Last
Because true rockers never die
Marshall Amplification does not endorse this product. It is an entirely independently developed unit. Marshall JCM2000 is a trademark of Marshall Amplification Ltd.