Equalizing with transformers

How would ordinary power transformer core sound? Or winding simultaniously on 2 rings of different material? Or using E, I laminations of different materials sandwiched? Eg. Silicon steel, Mumetal, iron etc. It sounds more and more like cooking. The art of electronics.


See also:


The use of microphone transformers for flat frequency response from producer's brain to listener's brain - euroelectron
http://euroelectron.blogspot.com/2018/07/the-use-of-microphone-transformers-for.html