The Marshall 1974X amplifier uses:
2 x ECC83 (also called 12AX7), 1 x balanced ECC83 for the phase splitter V3 position, 2 x EL84 matched power valves and 1 x EZ81 rectifier valve.
Over time your valves will lose their tone and their power. A brand new set of valves will get your amp sounding like new again. We always recommend JJ valves for Marshall 1974X 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 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, take a look at or FAQ section where there is loads of useful info on changing your tubes.
So what does Marshall say about this amp:
The 18w 1974XTM is a re-issue of the 1974 produced between 1966 and 1968. Just like the original, the 1974X is valve-driven, hand soldered, with an aluminium chassis, and has a Tremolo circuit. Its two-channel design includes volume, tone, speed and sensitivity on channel one, the tremolo channel and volume and tone controls on channel two.
The special 12″ Celestion G12M-20 Greenback in the 1974X has been ‘aged’ to get as close as possible to that vintage, worn-in sound of the 1974.