I'm with Albert on this one. I find the Telefunken to be the best I've used and I have tried the Brimar. Brandon at tube world has been a great resource to me. I am NOT a tube expert by any stretch of the imagination. He has helped educate me (I still know very little) and has the best customer service imagineable. In fact, I bought Brimars from him for my phono stage. They were good, but I didn't like them. The highs were not natural sounding to me. He took them back and sent me the Telefunken--which I loved.
Thinking about a tube roll to Brimar or Telefunken
I am presently happy with the performance of my Aesthetix Calypso and Rhea. But, I'm wondering if there is anything else out there (that I'm missing). Presently the pre is running the stock 12AX7WB and 6922 Sovtek. The phono pre is running 12ax7LP,12AX7WB, 12AX7WB, and 6922 Sovtek for the respective gain stages. My question is this. Does anyone have a little experience/advise on a tube roll to improve what I already have going for me. Understand what I'm not trying to do is attenuate a particular problem, these pre's have none IMHO. Just looking for an overall improvement, if there is such a thing. What about Telefunken smooth plates NOS or Brimar long plates CV4004? I have seen threads on Aesthetix Callisto and Io tube rolls but don’t know if the logic is transferable. Thanks for any and all help as always!