Elrog 300B vs Takatsuki 300B tubes

Charles, I take it you can just drop in the Mullard GZ37 in the rectifier location on the Franks? I'm still pretty new to this game...

P.S. I kind of wish there hadn't been such a positive impression of these Elrog tubes. I was all set to spend half that on a used pair of EMLs (in 6 months). Now the list of desired objects is increasing, and the funds absorbed by them is doing the same.

Cal3713,
The Mullard GZ37 is a simple plug in and play replacement rectifier tube. Cal, I tried to emphasize while conveying my Elrog description that the EML XLS and Takatsuki are still excellent choices. It's not as though I didn't enjoy listening until the Elrog came along(far from it). Believe me those two tubes will be an asset for any 300b amp owner. Please don't get the impression that a used EML wouldn't be an exceptionally good move.That's why I attempted to avoid hyperbole and risk going overboard with the comparisons/contrasts of these 3 top level tubes.

The Elrog does advance some attributes of the other two, Overall it is the best sounding of the 3 tubes by a modest but noticeable degree. that modest gap is worthy of recognition considering the stiff competition. The Takatsuki and EML were by no means "blown away". At some point you rank top tier items(all three tubes in this case)and the Elrog is my top choice.

Given a person's particular listening values and different system and or amplifier, someone else could possibly prefer a 300b other than the Elrog (even if that puts them in the minority). Cal, if your hearing/listening criteria are similar to mine you'll appreciate the 3 tubes under discussion but ultimately choose the Elrog.
Charles,

No worries Charles, you've been properly careful with your language. It's just that I'll be buying a new pair of 300b tubes sometime next fall and now you've made me want a more expensive set. And, unfortunately, I'm now stuck wanting a new rectifier tube as well, although I can at least swing that one before the new job starts in August.

Elrog update,
I guess I should have seen this coming, the good has gotten better. The sound continues to open up and has improved on what was described just a few days ago.

In essence here's what's evolving. The foundation, weight and body have improved(out of the box this was already exceptional). Yet at the same time resolution,musical subtleties,nuance, micro information are just fleshed out beautifully. The chemistry and interaction of the musicians becomes so apparent. Tonality and fully sorted out harmonic color and richness is simply excellent. The music flows fluidly with emotion and humanity. It's very difficult to end a listening session. I went well beyond my bedtime last night, couldn't help myself. These tubes are for pure music lovers as opposed to gearheads who are primarily into the components in and of themselves.

If all or most of what I'm hearing is due to thoriated tungsten filaments, why did it take so long for someone to try this material/construction in the 300b(that's been in production for 80 years)?
Anyone with a good quality 300b amplifier must seriously consider buying the Elrogs. These are genuinely special tubes. and will improve any system with their installment in my opinion.
Charles,

Charles1dad, Thanks so very much for your audio community contribution with test and results of these very fine tubes. If their were more like you their would be a lot less BS in the industry and a lot less wasted money. I don't know about some audiophiles but my money is still made the hard way,I work for it,and if I can go straight to this tube and not waste the money or time trying two or three pairs of expensive tubes then that's just great and you are to be commended! I'm sure there are some who are not too happy with your forthcoming candor of all the tubes you've spoken of. Again thanks, this all said as I order a pair of Elrogs! Lol! Heck, I just may go ahead an order an 845 pair as well.