Pirx

And this is the way i tried to do that - it worked and is still working. Thanks!

Hi, The time has come for my broken SRA-3S, unfortunately I don’t like what I have found inside there Any idea if this kind of slot is for sale nowadays anywhere?

New rings/spacer for new diaphragm, thicker rings for dust covers suggests that new mylar will be also used - that should give different results in tonality, very interesting project. Maybe your experiment will push me to mod mine 009. As for the hole in the stators, its purpose has me curious as well. I do not remember if I ever asked your here for this - can you share what you are using for coatings? Licron?

True, any modifications you make there won't allow you to predict results on genuine drivers. But I’ll still be interested in your work.

Ah, ok, so mods for cables. I was wondering if you found a way to trim tonality of drivers a little.

I would like to see your ideas about fixing SR-009 drivers. Are you going to use some 3D printed parts?

I was hopping that the latest version will be a lot better than the old I still have ... and not using. Now my hope was killed by Spritzer, thanks!

But what about humidity? It doesn't seems to be immune for it.

Can you share a little more details? Any picture what you are using, how much of it?

I tested the first series of SR-4070 headphones and couldn't quite understand Stax's testing approach. The fit was extremely challenging, which made them seem not ready for commercial release. In contrast, the SR-4070 Mk2 models were a noticeable improvement.

Maybe they designed it that way from the very beginning, thinking people would figure it out on their own. And then, after many years, they suddenly realized that no one actually knew why they made the earcups rotate.

The tube 6E5P in triode connection has Ka c.a 50 - I know because I tried it. So probably yes, it is not enough for 300B, when you consider even low NFB. And this tube has a really huge microphonic problems, every single one - not useable in audio first stage amplification, in my opinion ofc.

What about any photos instead of tons of text?

I have broken SRA-3s too, it is still waiting for my time. What about creating independent topic for this amp for discussion?

Does 009 have the same metal core in plastic?