[R-390] TR: Extraordinary Tube Advertisement

[Jacques Fortin]

Oh my !

There was so much of those GE 5654 sold as surplus 25 years ago.
Their price was in the "peanuts" category....
The new trend now is that the underground idiophile community is trying to sell those as extraordinary audio tubes (which they were never intended to be).
Whatever you use those as triodes or not, they will not produce any better sound than the most regarded, vintage audio-only tubes.

Same happened to the 5670s, which despite being real triodes, just succeeded to produce less-than-average sounding audio stage(s).
6688/E810F is another "rare" sharp-cutoff pentode "diverted" to the underground DIY audio "market" and surrounded by a thick "aura".
I was designing tube audio equipment to make a living 20 years ago, so I know one thing or two about...

73, Jacques, VE2JFE