Rec a 300B for Wavelength Cardinal Monoblocks

Hi Charles - Thank you for your guidance on all of those tubes, many of which I knew nothing about. Completely agree that listening in my amp and in my system is the best way to go. Hopefully I can find "the tube" without too much $$$ lost to trial and error.

I suppose, since I started this thread, it is "ok" for me to briefly sidetrack it to share something of possible interest to you and others. A couple of months ago I first heard the most remarkable speaker, the first speaker that actually makes me want to replace my Solovox. It is another one from Auditorium-23 - the Cinema Hommage. If you ever get the chance to hear this speaker, I am confident you will be impressed. For me, it has all of the things I love about the Shindo Latour, the Solovox, and the Vandersteen 7 - all embodied in one speaker that is actually smaller than any of those three. It is quite costly and currently has a low WAF, but I remain hopeful!

Best Regards,
Steven

4musica44107,
I have not found a tube I like better in the Wavelength than WE.

I have also tried
Sophia RP - edges too soft.

I am thinking of trying the Elrog when available.

a sleeper tube that is good in my Wavelength is Shuguang 300BS for about $200.Make sure it's the 300BS.It looks like a mesh plate with a black coating.I got mine 4 years ago and I don't know if they are still available.

Has tighter edges and closer to stage than Treasure 300B.
The Treasure has a little more bass and farther from stage

YMMV

Abill - Thank you for your follow-up reply and tube characterization comments. At this point I want the best tubes regardless of the cost and so am leaning toward WE, but I also will do some research on all of the tubes recommended thus far, hopefully do some listening, and of course talk with Gordon to get his input.

Best Regards,
Steven

Any updates here? 

Anyone try Elrog or EML Mesh, or EML 300BXLS in their Wavelength?