Hi. I see that Stephe speaks highly of the Shuguang KT88-Z tube for the Willsenton. I'm not too keen on eBay or even china-hifi. I recall a recomendation from a few different sources - Vivatubes was one, but there were a few others as well. Can anyone recomend other reliable and trusted vendors? Thanks
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I've been buying mine from https://youdaelectronics.com/search/?Keyword=KT88-z