General

VTGA-200 Power Valve Tester Topside Image

The VTGA-200 Custom Power Valve Tester

Test To The Limits, Hear Beyond Expectations Background Our goal at Valve Tube Guitar Amps has always been to deliver the absolute highest quality valves. Of course, valve manufacturers do their own quality assurance, but their focus is on valve production and meeting market demands. A lot can go wrong during the manufacturing process. And nothing spoils a gig or jam session faster than a failed valve. Valves are old technology and they can develop […]

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JJ ECC83S

JJ ECC83S Comparison of Prices in the UK

Prices on everything seem to be going up. We are all suffering the effects of inflation. I thought I would make a comparison of trusted valve ( tube) suppliers here in the UK on one of the most common valves, the popular JJ ECC83S. I looked at prices on the morning of 17th September, 2023. I went through the exercise of buying one piece. In each case, I picked the cheapest option to get a

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Vox AC15 front image

Exploring the Art of Valve Rolling

Valve guitar amplifiers have long captivated musicians with their distinctive warm tones, rich harmonics, and organic response. Central to their magic are the valves, also known as vacuum tubes, which play a crucial role in shaping the amp’s sound. If you’re an owner of a valve guitar amp, you may already be aware of the potential for tonal exploration through valve rolling. In this article, we delve into the exciting world of valve rolling, uncovering

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ECC83 with gas leak image

Simple ways to diagnose faulty tubes

It has happened or will happen to you when you’re the proud owner of a valve guitar amp or Hi-Fi amp. It worked fine yesterday and today it has gone weird. The thing is blowing fuses, making weird noises, or dead as a doornail. We, of course, sell valves and related gear, but we don’t want you to buy valves you don’t need. When disaster strikes, there are things you can do to diagnose if

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Vox AC30 Birch Stolec 1970

10 Mistakes Valve Amp Owners Make.

If you own an amp and want to keep amp repair costs to a minimum, there are certain things you should avoid doing. Here are ten things to keep in mind: Never wrap a blown fuse with tin foil and continue using the amp. This is a temporary solution that will eventually lead to more serious problems. Don’t gig with your amp for years without changing the valves. This will increase the likelihood of output

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EL34 II JJ Matched Quad Image

How to make a 100 watt amp less loud

Folks ask me about how to make a 100 watt amp less loud. They want the amp  “singing”  but they need to have the output valves starting to clip and this means LOUD. Usually they are amps with outputs north of 60 watts. Exceptions are Vox AC30’s which are 30 watts.  The discussion here is focused on amps that four or more output valves. First thing to keep in mind is that a 100 watt

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Zaerix Dark Logo image

Zaerix may re-appear

We now own the trademark ” Zaerix”  name along with the logo.  Zaerix is an old name in the UK market. We are working to bring the brand back to life while upholding the values of this famous name from the past..  Zaerix was the brand name of a company called Z and I Aero Services.  They did not make valves themselves but they did source high quality valves from manufacturers around the world and

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