1 x KT66 Valve (Tube) – JJ NEW TESTED

1 X KT66 Power Valve


In Stock

500 in stock

SKU: AMP0112 Categories: , ,

All single valves, matched pairs and matched quads are fully tested in our warehouse before dispatch. These valves will guarantee awesome tone and amazing power. You WILL hear the difference. So get your amp sounding better than ever. Order your replacement valves today.


1 x KT66 JJ Power valve for guitar amplifiers and hi-fi equipment

The JJ Electronic KT66 is a very faithful reproduction of the original KT66 valves.

The moment you pick one of these tubes up you can feel the quality. You know it is going to sound amazing. It is beautifully manufactured with robust construction and a thick glass envelope. It is a valve that is made to last.

What does the KT66 sound like?

The JJ KT66 delivers a powerful 25 Watts of sonic heaven with LOADS of headroom.

The valve has an immediate warmth and richness. It can be described as having a fuller balanced sound than the more commonly found 6L6GC.

You may wonder why these valves are not more common in guitar amplifiers. The answer is that amplifier manufacturers, des[perate to keep costs down, either use cheaper valves, inferior Chinese valves – or both.

KT66 power tubes 

These are selected Premium grade valves for superior tone, power and performance.

  • Every valve is carefully chosen and digitally tested before we ship to you.
  • We have 30 years in the business so you are in very safe hands.
  • All of our valves are fully guaranteed.
  • We offer a range of shipping options with tracking and full insurance.

Additional information

Weight0.3 kg
Dimensions15 × 15 × 15 cm


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1 X KT66 Power Valve

1 x KT66 Valve (Tube) – JJ NEW TESTED