I have bought quite a few tubes lately. No problems with small input tubes, these guys last forever. Got a couple of bad power tubes. Some were NOS and some were tested good. I got one bad tube of each kind. These were ebay purchases. I politely contacted the sellers who promptly sent me a good replacement. One was from Slovenia. No stress. --Jerry
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"I re-tubed a McIntosh MR-71 FM tuner with replacement tubes that were all NOS. It was expensive, but worth it. I used Telefunken tubes from the 1950's and 1960's, all bought from reputable online tube dealers."
I use a 65 MR 71. 13 NOS Telefunken tubes= WOW, kinda pricey? I was advised just the 2(L/R)audio output tubes would (if at all) make a noticeable SQ difference and a alignment with any tube change regardless of tube pedigree and proper antennae make biggest impact.
I use a pair of Raytheon's in the output stage. The rest are RAM "premium" grade(also pricey, but not as bad as your Tele's)
Thanks. I have looked at that page, & considered buying a quad of Psvanes or Shuguang KT88T. However their shipping charge was quite ridiculous, IE $100+ to the US. I tried email to check if that was correct but never got a reply. That told me a lot about customer service. Actually, Customer service in that area of the world seems to have a different meaning than what I am accustomed to.
In my experience customer service from China has been invariably good - very polite, and prompt.
Issues with tubes present some issues and I’d be a bit circumspect too if I was a vendor, knowing the tricks some people get up to. Having said that, they do provide this assurance on their web site -
A tip with tubes (as with many things) - steer well clear of trying to get the cheapest price.
Known as false economy. Its not a new concept - what is the reason people don’t know this?
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