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The PM range of guitar tubes is a unique blend of proven vintage technology plus an intensive research development program covering all aspects of performance and production. The result? Tubes of unparalleled sound quality and reliability. That’s why PM are design consultants and tube suppliers to many of the biggest names in the music business for both guitar and high-end audio.


Why upgrade to PM Guitar Tubes?

Like guitar strings, tubes should be considered a consumable item!  When it comes to amplifier maintenance, some people are content to change their tubes when the existing set have burnt out -but this can cause damage and additional wear to other components.

In order to avoid your tone becoming muddy and lifeless (unless that is what you are aiming for!) and to keep your amp running at its best you need to replace your tubes regularly.  PM recommends replacing tubes at least every two years; the more often and aggressively you play, the faster your tubes will wear out.

The PM range was created to simplify re-valving an amp.  We have picked what we believe to be the best sounding and most reliable valves from current production.  



The standard in preamp tubes, the PM 12AX7A is a great all around preamp tube.  With fairly clean tone, good break up, tight lows and rich mids, this tube also has great dynamic response and low noise.  The single most important part of your signal chain, these 12AX7 preamp tubes are built to the highest standards and are at the heart of your amp.  These ship 1 to a box.  


  • 1 to a box
  • Set of 2 is full replacement for a Diamond Positron
  • Set of 3 is full replacement for a Diamond Assassin
  • Set of 6 is full replacement for all Diamond 100w heads


Tagged: Dbz, Dbz/diamond, Diamond, Diamond amps, Tubes

Type: Tube


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