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180 Day warranty
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Hiwatt SS20/40 Valve Kit

£130.00 (ex. tax: £108.33)

JJ Electronic 4x EL84 x ECC83S 1x ECC81 Valve Kit. Includes matched EL84 output valves, and a hand-selected ECC81 for the phase splitter. All premium tested in house.

180 day warranty.

Availability: In stock

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We made this JJ Electronic valve kit for the Hiwatt SS20/40  but it’s suitable for any amp using this valve combination.

Included Valves

  • 3x ECC83S (including balanced phase splitter)
  • 4x EL84
  • 1x ECC81

The ECC81 is matched and balanced for the phase splitter position to drive the EL84 output tubes. There are four matched EL84s.

We test all valves and hand match them on our custom  output valve tester at real amp voltages to ensure you receive the best possible quality.  This isncludes chacking for noise and microphonics. We test the ECC81 on our custom preamp tester, which also checks for noise and microphonics. The kit includes certificates showing the test results.

Valves made in Slovakia.

Includes our class-leading 180 day warranty.

Amp Make

Amp Model

★ Premium Valve Testing

Our Premium Tested Valves are the only valves in the world tested for noise, longevity, and real-world performance. We run them at real amp voltages, sound-check for noise and microphonics, and carefully match output sets to deliver maximum reliability and tone. You can't buy a better valve. Each one comes backed by our industry-leading 180-day warranty. Learn more about what makes these the world’s best valves.

★ Shipping Info

Shipments within the UK come by Royal Mail with 24 hour tracking (no deliveries on Sundays). We also offer international shipping. All orders securely packaged.

★ Safety

Please make sure your amp's bias is set correctly. If not, you could hamper your tone and even limit the life of the output valves. Also note that valve amps can retain high voltages even after being switched off. If you are not sure of fitting your valves, please seek the services of qualified personnel.

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