I would be suspicious and cautious towards the AVVT 2A3 meshplates. A couple years ago I bought a NOS quad set in beautiful blue glass with the intention of using them in my speaker amps. Before installation I tested them on my Amplitrex and found that they drew substantially higher plate current than the textbook 2A3. In a normal amplifier with auto (self) bias, the tubes would been burnt through quickly. I ended up selling them with the disclosure that they measured different from normal 2A3s and should be used in an amplifier with fixed (adjustable) bias.
Thank you very much, Donald. My enthusiasm certainly got the better of me, and I forgot the rule that we have all stated clearly earlier, namely, to be sure to check with you about compatibility before doing any tube-rolling.
Besides, I really cannot believe that I will ever hear headphone music any more beautiful than what I am listening to right now --- Emil Gilels and his daughter Elena playing Mozart's Concerto for Two Pianos and Schubert's fantastic two piano Fantasie D940 on DG --- through my Bricasti, Stratus and T1.
Just plain AWESOME.
Thanks again, Donald !!!!!!