I have never heard the Treasure 300b but I did a lot of research before purchasing the 300b tubes for my Manley Neoclassic switchable SET/Push Pull monoblocks and have been extremely happy with the Sophia Carbon plate tubes. Very dynamic and neutral tube with excellent balance top to bottom. The tubes sound great in both push pull and SET mode. Dead reliable with now 18 months on them. Massive improvement over the TJ mesh plate gold pin globes I had before.
Outstanding 300b's for Push-Pull Amp?
I'd like to see if I can improve on the Golden Dragon 300b tubes that came stock with my amp. I've read as many reviews and comparisons as I could find and based on those, was just about to order the Shuguang Treasure 300B-Z tubes. But a couple of last minute phone calls threw a monkey wrench in my plan. I was advised that if the comparisons were conducted using SET amplifiers, much of what I was reading would not be applicable for my push-pull amp. If anyone can recommend 300b tubes for a push-pull application, I would very much appreciate hearing them. Thanks