Seems the same as PCC/ECC85. It's been used in several designs, notably EAR, but it is actually not very linear, almost like a variable mu triode. This means it could find use as a LTP (phase splitter...), cathode folower. A usably linear operating point may be found for small signal amplification, o it could be used in circuits where some complementary distortion cancelation scheme is at work. In other words, probably not your first choice for use in audio. I actually have over a hunderd brand new Telefunken PCC85s waiting to find some use...
I have an experimental PCC84, PCC85 line-stage cooking in my breedbox at the moment, but have never seen a PCC805 before.
From the Vademecum: http://www.mif.pg.gda.pl/homepages/frank/short/053/0/088.pdf these PCC805 look promising.
Send me some couples to evaluate if you like.
From the Vademecum: http://www.mif.pg.gda.pl/homepages/frank/short/053/0/088.pdf these PCC805 look promising.
Send me some couples to evaluate if you like.
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