George you want a PP 300B amp ???
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It is difficult with the way these output transformers are tapped. multiple windings that are series and paralleled to make the right output Impedance.
I do plan on making one for my buddy that would have relays to switch the transformer from 8ohms
to 40ohms when the phone is plugged in. and automatically switch from the headphone jack to terminals on the back.
I am bad I know.........
I just like to post my experience to date with the Bendix graphite tube variations. I do not think that Bendix had high QA standards to simply reject tubes but put those tubes in general circulation as long they will work. I had a Bendix tube that worn out later due to the getter formation that was incomplete at the factory. I also have another Bendix tube that tested good in all conditions on my Sencore tube tester but will not auto adjust the bias correctly in the amp that I am using. Once one of the Bendix tube wear out in the amp I will switch out the remaing Bendix to something else I have in my collection. I am planning for the future where I will still have new tubes to explore.
P.S. I am going to explore something wonderful at PS Audio this weekend.
John Bendix were making these tubes for aeronautical applications so I would have thought they had high standards.
I had Bendix with sorts, but they could have been rejects you never know.
What's happening this weekend?
I agree. We can start here: Hotel Rex
Listener Beware. I live in a small one-bedroom apartment with 75 amps. And I make a good drink too.
Clayton, my house in Bernal is small but the amp/sq.ft. density is much lower than your pad!
I'm happy to host you and others to evaluate the New OTL.
I have a Viking range, sharp knives and a cocktail shaker so we should be ok!
OMG. A Viking Range and New OTL. Heaven.
Olives or pickled cocktail onions, and a twist.
I'm ready to replace my old 1930s stove with a Viking Range. A small Viking Range. But not yet.