Hello friends, For my designs I know the internal capacitance determines the high freq response and coupling/bypass determines the low freq response. however if I use a transformer at the end of an A class power amplifier, will it affect my frequency response ?

 

Yes.

Depending on primary- and secondary impedances and the transform ratio.
impedance changes at the secondary are noticeable at the primary.
Filters and feedback mechanism should be put in place to compensate frequency response issues.

Picbuster

 

This might help -

http://jensen-transformers.com/wp-content/uploads/2014/09/Audio-Transformers-Chapter.pdf


Regards, Dana.