Yeah, it's a bit hot (2.9v/5.8v), and I was using the Cinemag transformers so getting more voltage coming in, but I had a ton of headroom, so it might still be fine with a more standard 2v/4v input signal. Might still need the Cinemag's to get higher than 2v input though.

I have, albeit briefly. Was a Double Sided Tungsten, and running 6528 power tubes, and 6J5 drivers. Ran Tungsten with ease. Used low gain, and using a Holo May L2 as a DAC, and had no problem driving it. I haven't heard Tungsten on anything else, but it sounded amazing on the BH+.

I suspect I'm the source of that upgrade option. I've been wanting an amp that can run them for a while, so bugged Mischa about it and it was an easy mod to be able to run a pair.

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Getter styles are different depending on who they were manufactured by, and to some degree the tube type as well. That G2F tube would be a Loewe Opta (after 22 Feb 1954) if it were made in 1962, and I don't know enough about them to know when they changed the getter style. From my experience...

In short, it's understanding what the getter is/does, and like bcowen said, the actual getter is the material that ends up being adhered to the inside of the glass, and what we all call the getter is the remaining holder. Once that concept is understood, it's easy to see that it won't have an...

What do you mean by proof? My information came from a reputable source, and there are multiple other solid sources that say the same thing.

If it wasn't something I was absolutely sure about, I would have said "in my opinion" too, and I do understand that it's a very common misconception. I didn't learn what the getter actually does until I searched for it, as I don't often see it discussed in forums, and hadn't come across the info...

The amount of getter material still wouldn't have an impact on how a tube sounds, only on if it were enough material to get a good vacuum on the tube.

The getter holds the metal for creating a hard vacuum, and serves no other purpose. It can't possibly have any effect on how a tube sounds. If you do some basic googling, you can find multiple sources that support this.

Yeah, exactly. Typically bottom getters are older production, but not always. 5998 tubes seem to have had both at the same time, but I think they are the exception.

It doesn't. It's purely an indication of manufacturing style. Typically, top vs. bottom getters were just a year change, as in older tubes were bottom getter, and they later changed to top getter, likely due to a change in manufacturing process. Getters have zero impact on how a tube sounds.

The getter has zero impact on how a tube sounds. It is purely an indication of production year, as getter styles changed over production years.

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