I just got a preamp that uses a 5y3WGTA tube. I'd like to experiment with some other tubes. When looking at possible tubes, can I use any 5y3 tube or must they have the WTGA designation as well?
It's not the designation that's so important as long as you use a 5Y3. It's the brand. Different brands of rectifiers (which the 5Y3 is) sound different from each other and affect the sound just as much as different brands in the audio stages.
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