LL1570 Mic Input, Mic Splitting And Mic & Line Isolation Transformer

The LL1570 is a very high quality general purpose audio transformer for low turns ratio mic input, for ground isolation,
balanced-to-unbalanced convertion and for splitting 1:1+1. By careful design, the capacative coupling between the
different parts of the transformer is kept to a minimum. The three-section winding structure used in the LL1570 results
in a very high bandwidth. The transformer is built up from two coils, each with primary and secondary windings
separated by electrostatic shields, and a high permeability mu-metal core.
In the LL1570XL, the core is about 45% larger than in the LL1570, resulting in a high signal level capability.