Very cool. I'd love to see/hear more if you'd be willing to start a thread or share a link.Yes. It's the second of three that I've made over the years. I'm currently working on it's much larger brother that will use the 100TH.
3C24, 866A, 0D3, and ECL82View attachment 4680
I really liked them. I was heartbroken to find them not being produced when it came time to replace them. I had tried JJE34Ls (had pin problems), 6CA7EHs (Paul Grzybek's specified original tubes - they were "okay", imo), JJ/Tesla KT-77's (garbage right out of the box), and finally found Tung-Sol 6550's (current production) which I enjoy immensely. So much so that I'm on my second quad from Upscale.Those SED 6550s were great tubes! I can remember replacing many Chinese KT88s and 6550s in the 90s with the rock solid SED.
(emphasis added)Another 300b with a different view (dust added for extra effect)....
Very nice. Is it your amp, @je2a3 ? What's your take on filament supply for the Type 10 variants?
Globe 56 + thoriated VT25