The Blackstar HT20 amplifier uses 2 x ECC83 (also known as 12AX7) preamp valves and 2 x EL34 matched power valves.
We always recommend JJ valves for the Blackstar HT20 amplifier. They guarantee awesome tone and long life at a very competitive price. Remember, JJ is one of only five manufacturers of valves in the world.
So this means you are not paying higher prices for the same valves that have simply been rebranded by a “boutique” valve seller.
So restore the power, tone and sparkle to your guitar amplifier. Treat yourself to a brand new set of valves today.
So if you have any questions about replacing the valves for Blackstar HT20 please do not hesitate to contact us. We have over 30 years experience so one of our team is always happy to help.
Also, do take a look at our FAQ section. Here we answer all the most popular questions we get asked every week about changing and upgrading your tubes.
About the Blackstar HT20 amp:
The HT Studio 20 combo is the big brother of the critically acclaimed HT-5. It offers huge versatility for home, rehearsal or studio use.
They’ve carefully voiced the preamp and coupled it with a cathode-biased EL34 power amp. Therefore this provides the user with the ability to create wonderfully lush valve tones through the 12″ Celestion speaker.
They’ve made the Clean Channel on the Blackstar tube amp to give a wide range of clean and moderately overdriven tones. They’ve voiced this to be typical of many ’boutique’ style amplifiers. Plus they’ve given it a ringing Class A type performance.
The HT Studio 20 Overdrive Channel is characterised by a tone that’s high in gain. But it lacks any of the detached top-end ‘fizz’ often found in many similar designs. This is a result of unique preamplifier and power amplifier shaping techniques.
Finally, the overdrive cleans up beautifully as the guitar volume is reduced. So even at the most extreme settings, the Overdrive Channel remains natural sounding.
Best valves for the Blackstar amplifiers. So order yours today and get your amp sounding better than ever.