Ampeg J-20 Diamond Blue Jet

Valves for Ampeg J-20 Diamond Blue Jet amplifier.

The Ampeg J-20 Diamond Blue Jet amplifier uses:

2 x ECC83 (also known as 12AX7) preamp valves.
1 x Balancxed ECC83 for the phase inverter (position V3).
2 x matched 6V6S power valves/power tubes.
1 x GZ34 (5AR4) rectifier valve.

Note: the balanced valve goes in the V3 position which is the preamp valve furthest from your input jack.

Over time, your valves will slowly lose their power and more importantly, their tone. It’s important to change them on a regular basis to keep your amp sounding as sweet as the day it left the factory.

We always recommend JJ valves for the Ampeg J-20 Diamond Blue Jet amplifier. They give you awesome tone and long life at a very competitive price.

Order your valves for the Ampeg J-20 Diamond Blue Jet below and hear the difference.

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

All valves are carefully selected, digitally matched and graded before we post them to you.
We offer a range of fast delivery options. Fully tracked and insured so you can order with confidence.
International shipping – we ship around the world every single day.

Valves for Ampeg J-20 Diamond Blue Jet amplifier.

If you have any questions about replacing the valves for Ampeg J-20 Diamond Blue Jet 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 advise.

We also suggest that you take a look at our very helpful FAQ section.

Here you will find the answers to most questions as well as lots of useful hints and tips if you have never upgraded your tubes before.

About the Ampeg J-20 Diamond Blue Jet amplifier:

In summary, the Ampeg J-20 Diamond Blue Jet is a 20 watt, 60s style single-channel amp. It’s the big brother to the J-12T and powered by 3 x ECC83 and 2 x 6V6S valves through a 12” alnico speaker.

The Ampeg J-20 Diamond Blue Jet is portable, easy to control combo is great whether rehearsing, home use and recording. Due to what Ampeg describes as “inner tubing” the end result is a controllable vintage crunch with Ampeg’s classic ease-of-use.

With just Volume and Tone controls the Ampeg J-20 Diamond Blue Jet offers just the right amount of edge. Other features include point-to-point wiring and foot switchable bias-vary tremolo circuitry. So this amp is a no-compromise guitar combo ideal for tone purists.

Features: