1 x ECC83 (12AX7EH) Valve / Tube – Electro Harmonix NEW TESTED

1 x 12AX7EH ECC83 valve (tube) Electro Harmonix


In Stock

495 in stock

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.


Electro Harmonix ECC83 12AX7 valve/tube for amplifiers

The Electro Harmonix 12AX7 preamp valve, also known as an ECC83 EH, is one of the best preamp valves you can buy.

This is the valve choice of professionals and is one of the best valves you can buy. These valves are regularly used, and rebranded, by many of amplifier manufacturers.

If you need a Balanced ECC83 for the phase inverter position on your amp just click on this link.

Electro Harmonix ECC83 EH preamp valve versus the 12AX7

One of the questions we get asked the most is what is the difference between a 12AX7 and ECC83. The truth is there is absolutely no difference.

In the UK and Europe we call this valve an ECC83 whereas in the US and other parts of the world it is called a 12AX7. The EH at the end simply indicates that it is made by Electro Harmonix.

What does the ECC83 EH sound like?

This valve has proven to be extremely successful for three reasons:

  • Superb tone and performance.
  • Low noise and minimal harmonics.
  • Long life.

Changing the make of preamp valves you use in your amplifier can make a difference to the tone and feel of the amp. For guitarists this is very important.

Trying different valves in your amp is called “rolling” your valves and you will hear this term used frequently on the forums.

Just one word of warning when reading other people’s opinions on the forums. The preamp valve is just one part in the signal chain. Every guitarist is using a different guitar, different pickups, a different lead, different strings, different volume and acoustics in the room ….. I could go on but you get the idea. So don’t be too influenced by other people’s opinions – make your own mind up.

So trying different preamp valves , particular in the V1 position (the first valve that receives the guitar signal) is a great way to find out what works best for you.

Why everyone should have a spare ECC83 preamp valve

Did you know that he ECCC83 preamp valve is used in every valve guitar amplifier ever made, almost without exception. If you are a gigging guitarist you absolutely must carry a spare preamp valve for emergencies. It can be installed in minutes and save the gig. It’s also a great way of testing what is wrong with your amp when you start to have any problems.




Additional information

Weight0.1 kg
Dimensions11 × 11 × 11 cm


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1 x 12AX7EH ECC83 valve (tube) Electro Harmonix

1 x ECC83 (12AX7EH) Valve / Tube – Electro Harmonix NEW TESTED