The Supro Thunderbolt S6420 amplifier uses:
Note: The balanced ECC83 goes in the V2 position which is the preamp valve sitting next to the two power valves.
A brand new set of valves will get your amp sounding better than ever.
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 manufacturers of valves in the world. So don’t pay higher prices for valves from the same factory that have simply been rebranded by other companies.
So restore the tone, the power and the sparkle to your guitar amplifier. Treat yourself to a brand new set of valves today.
If you have any queries about replacing your valves please get in touch. We have over 30 years of experience so one of our team will always be happy to help and advise.
Also, we recommend that you take a look at our FAQ section where we answer the most popular questions we get asked each week. You will also find lots of useful tips if you are new to upgrading your tubes.
If you want to know what your shipping options are, simply add the product to the basket and when you get to the check out it will show you delivery costs, options and delivery times.
About the amp
This is the 50th Anniversary reissue of the original 1964 Supro Thunderbolt.
One of the preamp valves is tucked away on this amp and not immediately obvious. You can download a copy of the Supro S6420 Thunderbolt User Manual here.
Order yours today and get your amp sounding better than ever.