Amcron PSA2

Hi! i have purchased an AMCRON PSA-2 with the balanced input card.

Signal are eletronically balanced, and i would balanced them with audio transformer (es. LUNDAHL LL1539)

I can take the signal, make it pass through the transformers and then insert it directly into the circuit, Bypassing the board.
Is there another way?
I hope you can help me