Looking For Candidates For That Mythical 6922 Tube

Regarding Amperex, I agree with @three_easy_payments that the premium tubes are way better than Bugle Boys. They were manufactured in both USA and Holland and are called 6922 Amperex PQ. Liquid midrange and an extended yet smooth top-end, it’s a lively tube.
Also, there's the 7308 Amperex PQ Holland, having more slam and a fuller, less transparent sound. As I said very lively tubes, but do not have the high-end energy of Siemens or Telefunken.

AMPEREX nos for great sound not cheap though.

I've used that Reflektor tube in my Dac.For what it's worth,it has very good bass in that application but nothing special about the highs.Mullards seem to have the most extended highs.

So I have been down the road of several of the Amperex, a couple of Siemens, Tungsram, Telefunken, and I forget what else. Never been a fan of a Mullard that I heard, one of those tubes would have to be far different than what the typical Mullard house sound is. 

What I really want is a tube that sounds like a good transistor! I don't want tube warmth, sweet highs, or gobs of texture. To be honest I used to be a tube guy, especially SET, but these speakers have no interest in playing nice with tubes. Even just one lousy pair in the pre drive stage of the amp. 

So why am I torturing myself? Well I own it, and I wouldn't care if I sold it, but as you may have noticed with COVID19 very little audio equipment is selling, its not a high priority for folks right now. So I own it, and figure I might as well as try as hard as I can to get this thing voiced to where it works well with my JBL 4365. Now I put a pair of Maggie 1.6QR in front of it and I am looking for a tube like those Amperex, as that speaker is much more upfront and wants a bit of that tube goodness. 

But with the JBL I want a tube that sounds like a quality transistor. 

Well then, Amperex and Mullard are out; they reveal lots of textures.
IME, the 7308 Siemens West Germany would be worth a try. And with Telefunken, there is a difference between the smooth plates and the ribbed plates.