Adding 2 sigbals with hybrid transformers while DC current of feeding anode circuits cancel

For example amplifying each mic with an 1H4 electron tube (Pleiades V6 1H4 or CV2269)and use the hybrid transformer as an output transformer for both electron tubes, like on push pull circuits. Inspired while watching the EMI REDD.37 and REDD.51 block diagram while thinkimg of the Kimball mixer in the cinema Engineering book or the Elements of Sound Recording - Frayne, Wolfe books.