Give me a good tube preamp any day! Amplifier too! I'd bet even Don could
hear the difference!
You are probably right. The article in the link gives a good explanation.
But the sales pitch about the blue glow and Edison effect looks to me like
pure BS, on par with oxygen-free speaker cable and $600 ac power cords .
One problem I have had with high-gain tube type preamps is 60~ hum. I
solved it by running regulated DC on the tube filaments!
Don
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