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Sovtek 5AR4 - Attention! Before buying any 5AR4, 5U4, GZ33, or GZ37, here is a hot ticket from Uncle Kevy: Buy the Philips 5R4GYS made in Holland. Click here for info. Very rare. We got a stash of them, so right now they sell at an abnormally low price and will head up to $100 each at some point. They are incredible. The only thing you have to do it make sure that sure you have enough height clearance... we provide you a picture illustrating the height of them so there's no surprises.
Current production made in Russia. Excellent and dependable tube. Most current products using the 5AR4 as a rectifier use this tube or the Shuguang (Chinese). The Chionese is more dependable.