Our task was to renovate a June 1973 Marshall Model 1959 Super Lead 100 watt head It had been modified in the 1990’s to use 5881 output valves. This was…

A Marshall JCM900 Breaking Valves was the cause of this amp’s failure. It travels around a lot and it has the original 1990’s valve retainers on the output valves. The…

Marshall JCM900 Chassis image

A Marshall JCM900 100 Watt Combo  arrived in the workshop.  This version is the 4102  It was very poorly. The first issues seen were : 10 amp fuse in the plug!!…

Marshall JCM2000 DSL amp image

The early (1997-2003) Marshall JCM2000 DSL50, DSL100, TSL100 and TSL122 amps are often troubled by an unstable bias (drifting bias). These are nice amps and I have one myself This…

Here are Things learned about Valve Amps in 2018 . They are in no particular order. Perhaps some useful info about your amp. I thought I would share them before…

EL34L JJ Matched Quad Pack Image

We have broadened our range of EL34’s in our store. But which one is best for my amp? This is a handy quick guide to EL34’s We now have :-…

A Marshall JCM900 amp arrived.  The JCM900 combo is basically a 100 watt twin 12 inch speaker combo and is a true Marshall stack in a matchbox. Nice and easy…

Marshall JCM2000 DSL amp image

I have now worked on two Marshall JCM2000  amps and both are around 10 years old. Both had very similar faults. The fault on both was that the amps sounded…

JJ EZ81 Rectifier

Rectifier Valve ? Many of the vintage amplifiers such as the Vox AC30 , Fender Twin Reverb  use a rectifier valve.  Other amps use modern silicon diodes. The rectifier valve…

Customer Reviews


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"Have bought from Stewart several times, he knows his stuff and while he may not always be the cheapest you’re getting the expertise and experience that few others can match. That’s so important when you’re buying valves." - N.G. 11th March 2020 - bought Tung Sol 6l6GC-STR's

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"Ggreat service, many thanks" DW bought JJ GZ34S high sag version 21st March,2020

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