|
In order to amplify a signal, you need an external source of power.
A transformer can increase either voltage or current (at the expense of the other), but output power will ALWAYS be less than you put in because of losses in the transformer. Using one transformer to feed another will INCREASE the transformer losses, and add even more loss due to impedance mismatch.
If you want more audio output power, you need a more powerful output stage, or an external amplifier.
|