Best valves for Audio Research D125 power amplifier

Audio Research D125

Best valves for Audio Research D125

The Audio Research AR D125 power amplifier uses:

8 x 6550 matched power valves/power tubes.

AR say that the valves should last about 2,000 and should be replaced with two x matched sets of four 6550 making eight valves in total. We sell them as matched quads so you will need to order two sets if you want to replace all the valves.

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 in the world. So don’t pay higher prices for valves from the same factory that have simply been rebranded by other companies.

Order your new valves today and hear the difference

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

  • All of our kits are carefully selected, fully tested, digitally graded, balanced and matched.
  • A significant upgrade in quality compared with stock valves.
  • We offer a variety of shipping options with full tracking and insurance so you can order with confidence.
  • We have 30 years of experience so you know you are in safe hands.
  • International shipping – we post all over the world every single day.

Replace the valves on your AR D125 power amp

If you have any queries please get in touch. We have over 30 years of experience so one of our team will always be happy to help and advise.

If you haven’t changed your valves before, please take a look at our FAQ section before you contact us. Here we answer the most popular questions we get asked each week.

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

Click here for a copy of the user manual for the AR D125 power amp.


Tubes for sale for Audio Research D125     

Order your new tubes today and get your amp sounding better than ever.

Simply choose the complete replacement valve kit or the seperate valves for your amplifier below:

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4 x JJ 6550 matched valves

4 x 6550 Valve JJ Matched Quad TESTED NEW

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