Pultec amp questions

Hi all,

I've been thinking about following my pultec filter with an API 325 card, and I have a couple of questions:

I have one API card with a Jensen JT-11P-1 10K:10K transformer on it. Would that be better to use than a card without an input transformer?

Will the filter section be happy working into the API card's impedance?

How much gain should I set the card for? Should I measure the insertion loss of the filter and set the API to make up for that amount?

Thanks,

I think that Jakob have some answers about that! Think you'll need around 20dB make-up gain! In Jakobs version the schematics says 10K prim for the make-up input, Sowters transformer is a 2,5k!