Power valves

Please note: orders of two or more power valves are matched as standard.

For further information see valve testing & matching.


We thoroughly test all our power (output) valves on a digital measuring device pre dispatch.

Power (output) valves included in our valve kits are all specially selected & matched where required.
All power (output) valves are checked for the following:


Plate current (mA)
Transconductance (Gm, mA/Volt)
Grid leakage
Short circuits



The Guitarlodge team: Guitarlodge is a team consisting of Dave Parker (amplifier technician) & Steve Barratt (guitar repairs). They both come from a background of musical instrument repair, so decided to launch Guitarlodge in 2008 as the area was crying out for a dedicated combined guitar & amplifier repair service. It proved to be a …

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Amplifier repairs

The links below include information on our most requested amplifier repairs & servicing. If you require something that isn’t listed please contact us. 07833 997221 / 01473 729021 For amplifier repairs & servicing pricing guide please see prices page.

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Re-valve kits for guitar amplifiers

Amplifier valves

Digitally matched & tested valves - Large range of amplifier re-valve kits - Next day delivery - Best prices!

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« Need more items? Continue shopping NB: If you're using a phone, turn it 90 degrees into landscape mode to see the whole table

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  Contact information & repair centre locations: Email: Please note: we will never share your contact details or any personal information with other organisations, either for marketing or any other purpose. To view our terms & conditions (privacy policy) click here. Email: info@guitarlodge.co.uk If contacting us via email please include the following information: Full name Phone …

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Cant get to our workshops? Our courier service covers the UK & Europe. Contact us for further information.

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For more guitar & amplifier repair images & descriptions please visit our twitter & Facebook pages. Like or follow us to see regular guitar & amp repair posts, or maybe leave a comment!

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Amplifier revalve kits

Guitar & amplifier repair

Welcome to Guitarlodge, the guitar & amplifier repair specialists based in the county of Suffolk, South East England UK. Established in 2008 we offer the complete guitarist repair service & continue to serve musicians all over the country from our professional repair centres. With a large customer base, over 25 years experience in guitar & amplifier …

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Guitar & amplifier repair prices

The guitar & amplifier repair prices included below should be used as a guide only. We can give quotations (estimates) on various guitar repairs, based on our rate of £25 per hour (excluding materials). All prices listed include VAT at 20%. We cannot list every possible repair available so please contact us if you require additional …

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My Account

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Terms & conditions

Please read our terms & conditions carefully before making any purchase. By purchasing from our website you are entering into a legally binding agreement with us. If you are in any doubt about our terms please contact us by phone: 01394 274036 / 07711 744279, or by email: info@guitarlodge.co.uk IMPORTANT: We always recommend the installation of …

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We are always grateful to our customers for any feedback on our services. Please take a look at some of our fantastic testimonials:   Steve, Just to say  thank you indeed for the repair to my Flamenco guitar. I have had the guitar back for a few weeks now and the repair is holding up …

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Marshall 9200 during testing on bench

Valve amplifier biasing

What is valve amplifier biasing? Checking/adjustment of the bias setting (Valve grid control voltage) is necessary when installing new power valves on many valve amplifiers. This small crucial adjustment has a direct influence on the valves gain structure, function & lifespan. The bias setting controls the idle current to the valve grid, ensuring the valves …

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Testing JJ electronic ecc82 valves for balance

Valve testing & matching

The amplifier valve test process: We do our utmost to ensure your valves reach you in perfect working order, from the moment we receive them direct from the manufacturer to the time of dispatch. All our valves (preamp, power-amp & rectifier) are thoroughly tested at the factory before being shipped to our repair centre. Tests …

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Guitar repairs

The links below include information on our most requested services & repairs. If you require something that isn't listed please contact us. 07711 744279 / 01394 274036 For guitar repair costs & pricing guide please see prices page.

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