Anyone familiar with Mullard 12AX7 10M tube ?

I think, there are gold pins and regular pins.

These are very expensive tubes. Are they worth it ?

inna03-10-2025 11:29pm

audition__audio Details Discussions Posts This discussion Message User 1,683 posts 03-11-2025 at 10:03pm Copy Comment URL Report Comment Edit Delete A number of tube manufacturers used special designations for what they claimed to be higher quality examples within a tube family. My guess, at most, is that they may have factory tested and given this badge of honor. There is no way the 10Ms, Gold Brands of 5 Star tubes were made differently than their more common brethren. The range in Mullard sound is based upon production periods in my experience. This is true of many tube manufacturers.
audition__audio Details Discussions Posts This discussion Message User 1,683 posts 03-13-2025 at 01:52am Copy Comment URL Report Comment Edit Delete Well when these Mullards were made you didnt have components that really beat the tubes as some do now. All depends on the circuit I think.