That doesn't look right to me, here is how i would "interpret" it, not saying it is correct by any means...
+Vin to terminal 13
-Vin to terminal 12
+Vout wire to Tube, used to be on 13
-Vout wire to headphone socket, used to be on 12
-270k resistor is a safety bleeder so leave it in place, i.e. do not replace with a choke.
-Power supply grounding, this i cant answer as its not showing on the diagram, i am in two minds if the - rail should be tied to ground before or after that capacitor?