The Mesa Boogie Caliber 50 amplifier uses 4 x ECC83 (also called 12AX7) preamp valves, 1 x Balanced ECC83 for the phase inverter (V5) and 4 x EL84 matched power valves/power tubes.
A brand new set of valves will get your amp sounding better than ever. Our power valves are a direct replacement for the Mesa Power valves. There is no need to rebias the amp when you change valves.
If you are buying the full set of valves you will automatically be sent the correct power valves with the perfect bias for this amp.
Note: If you are just ordering the four power valves, simply put in the “Notes” field when you order that it is for a Mesa Boogie Caliber 50 and we will do the rest.
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 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.
The Caliber 50 was launched in 1987. The price then was £995, a staggering amount back then. Worth the money? Hell yes.
A quality amp that, like all Mesas, has stood the test of time.
This tube combo features 4 x EL84 output tubes for 50 watts of power. A compact and uncomplicated 1 x 12″ combo with switchable 5-band EQ and direct out.
Order yours today and get your amp sounding better than ever.