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blackstar studio 20

Blackstar HT Studio 20

Valves for Blackstar HT Studio 20 amplifier.

The Blackstar HT Studio 20 and Studio 20H (the head version) amplifier use:

  • 2 x ECC83 (also called 12AX7) preamp valves.
  • 2 x EL34 matched power valves/power tubes.

Over time your valves slowly lose both their tone and their power. Replace them on a regular basis to maintain the full tone of your amp. We always recommend JJ valves for Blackstar Studio 20 amplifier. This is because they guarantee awesome tone and power. They also give you long life – all at a very competitive price.

It’s a hybrid amp and the phase inverter is solid state rather than valve.

Note: This amp is both cathode-biased AND fixed bias (which is why there is a bias adjustment screw inside). Now that is a bit confusing but this is what Blackstar say:

“The Blackstar HT-20 uses a combination of cathode bias, and fixed bias in its output stage. It also has a bias balance feature, to minimise background hum caused by slight valve manufacturing tolerance imbalance”.

Order your valves for Blackstar HT Studio 20 below and hear the difference.

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

  • All of our valve kits are carefully chosen, fully tested and digitally matched before we ship them to you.
  • These valves are a significant upgrade to the valves currently in your amp.
  • Fast delivery options. Fully tracked to your doorstep so you can order with confidence.
  • We ship around the world every single day.

Replace the Valves for Blackstar HT Studio 20 amplifier.

If you have any questions about replacing the valves for Blackstar HT Studio 20 amplifier please do not hesitate to drop us an email and we will get straight back to you.

We have over 30 years of experience so we are always happy to help.

If you have never changed your valves before please take a look at our very helpful FAQ section before you contact us.

About the Blackstar HT Studio 20 and HT Studio 20H:

The HT Studio 20 combo is the big brother of our critically acclaimed HT-5 and offers huge versatility for home, rehearsal or studio use.
The carefully voiced preamp coupled with a cathode-biased EL34 power amp, provides the user with the ability to create wonderfully lush valve tones. The 12″ Celestion speaker certainly helps here as well.

Features:

  • 20 Watt valve (available as combo or head).
  • Valves/Tubes: 2 x ECC83 and  2 x EL34.
  • 12″ Celestion speaker on the combo version.
  • Digital reverb.
  • Speaker emulated output.
  • Finally, that cool vintage styling.

So order yours today and get your amplifier sounding better than ever.

Simply choose the complete replacement valve kit or the seperate valves for your amplifier below:
Why buy your new valves from Ampvalves?
all valves tested and digitally matched
  • Amazing Quality - All our valves have been tested to the highest possible standard using the best testing equipment on the market.
  • 100% Guarantee - All of our valves are fully guaranteed for complete peace of mind.
  • Soak Testing - All of our valves are soak-tested for 30 minutes to reduce failures after fitting.
  • Rated 5 Stars on Trustpilot
  • Awesome Tone - You'll hear the difference. A new set of tubes will get your amp sounding and performing like new.
  • Stunning Price - Our individual Valves and complete Amp Kits are competitively priced to ensure you get great value.
  • Superb Customer Service - We are always at the end of the phone to answer any questions you may have. We are all guitarists here and treat every customer as we would like to be treated.
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Stuart ukguitarampguy profile picture
Stuart ukguitarampguy
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I'm a Berkshire based amp tech and have fitted literally hundreds of valves sold by Ampvalves. Always reliable and I get a personal servivce too if I have any queries. Very good company in my view.
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Isabelle Worthington profile picture
Isabelle Worthington
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Great service , friendly and helpful very knowledgeable. Thank you so much amp now working as it should.
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Anthony White profile picture
Anthony White
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Absolutely brilliant service from Ampvalves.co.uk I will not hesitate to use this excellent company again. Easy website to navigate, with valves arriving well packaged and on time. Ampvalves provide a service I've not experienced for years. Try them. You wont be disappointed.
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Steve profile picture
Steve
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New valves arrived today from Ampvalves. Awesome. I loved the sound of my Victory V40 when I bought it new - and now it's even better. Great valves and superb customer service. Highly recommended.
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Alex Fischer profile picture
Alex Fischer
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I recently purchased a replacement tube set for my Line 6 DT25 Head amp from Ampvalves. The website is very user-friendly and makes it easy to find the perfect tube set for your amp. Due to an error by the parcel service, my shipment did not find its way to me. After contacting the support, I was helped immediately and competently. The quality of service was truly exceptional and exceeded my expectations. A special thanks to Barry Tyler. Hey Barry, you did a very good job. The tube set arrived afterwards in excellent condition, exactly as described on the website. The quality is remarkable. It’s well worth the money for their high-quality tubes. I highly recommend the tubes from Ampvalves. Also, my amp gives grateful feedback with a wonderful fresh sound. Alex from Switzerland
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Max Bevan profile picture
Max Bevan
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Will never buy valves anywhere else. Incredibly well set up website to find the correct tubes. Very well priced and very quick delivery. Will be recommending to everyone! Thank you!
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David Dawkins profile picture
David Dawkins
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Amazingly helpful, truly above and beyond with their customer experience. I was pretty stuck, through my own fault, and still they went the extra mile to get me back up and running. Thank you so much.
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kev herbert profile picture
kev herbert
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Cant fault them extremely helpful & prompt with delivery.
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Steven Wilson profile picture
Steven Wilson
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Excellent place to grab your amp valves. Great choice of valves, amazing customer service and prompt responses to queries via email. I was unsure of the best valves to use for my amp and sound, they gave me great advice. When I ordered the valves I used the wrong delivery option and they even sorted that out for me. Highly recommended.
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