Valves for Blackstar Series One 104EL34 amplifier.

Blackstar Series One 104 EL34

Best valves for Blackstar Series One 104 EL34 amplifiers.

The Blackstar Series One 104 EL34 amplifier uses:

  • 4 x ECC83 preamap valves (also called 12AX7).
  • 1 x ECC82 (12AU7).
  • 4 x EL34 matched power valves/power tubes.

Over time these valves slowly lose both their tone and their power. So a  brand new set of valves will get your amp sounding like new again. We always recommend JJ valves for this amplifier. This is because they guarantee you get awesome tone and long life – and they don’t cost a fortune. Remember, JJ is one of only five valve manufacturers in the world.

So don’t pay higher prices for valves from the same factory that have simply been rebranded.

Order your valves for Blackstar Series One 104EL34 amplifiers below and hear the difference.

So restore the tone, the power and the sparkle to your guitar amplifier. Treat yourself to a brand new set of valves today.

  • All of our valves are carefully selected, fully tested, digitally graded and matched.
  • We offer a variety of shipping options with full tracking and insurance so you can order with confidence.
  • International shipping – we post all over the world every single day.

Replace the Valves for Blackstar Series One 104EL34 amplifiers.

If you have any queries please drop us an email and we will get straight back to you.

We have over 30 years experience so one of our team will always be happy to help and advise.

Do take a look at our very helpful FAQ section first. Here you will find the answers to most questions as well as some great hints and tips if you have never upgraded your valves before. We are here to make it as easy as possible for you.

About the Blackstar Series 1 104EL34 amp:

Four EL34 power valves form the backbone of this 100W high gain power house and provide unbelievable dynamics and head-room. The DPR control allows the power to be reduced down to 10W. So this means you can get beautiful power amp distortion at a much lower volume level.

Setting new standards in tonal flexibility, the deceptively simple preamp section has four world-beating channels (6 modes). In addition, these are further augmented by dual ISF controls.


  • 100 Watt head with power reduction and four channels.
  • Valves/Tubes: 4 x ECC83, 1 x ECC82, 4 x EL34.
  • Clean channel with Warm (Plexi) and Bright (Class A) type modes.
  • Crunch channel with Crunch and Super Crunch modes.
  • Two overdrive channels with high and low output damping.
  • Two ISF equipped tone control sections.
  • Series effects loop.
  • MIDI switching.
  • Finally, a speaker-emulated output.

Best valves for Blackstar Series One 104EL34 amplifier. So order yours today and get your amp sounding better than ever.

Scroll to Top