If you buy the Winged "C"(which I would also recommend): be certain they are the newer ones(from the St Petersburg plant) and not someone's older stock. You won't find a more dependable seller than Upscale. Check out his test/burn-in procedures(listed here): (http://www.upscaleaudio.com/product.asp?itemid=63&catid=86)
Best current EL34 tubes
I need a matched quad and noticed that the svetlana. Electro-Harmonix, and JJ are all about the same price. Which are the best ones to buy for natural sound accuracy? Thanks for the help in advance.