There's something the books don't teach you. In every textbook you'll see that the emitter follower aka common collector topologies have a voltage gain of less than 1. Well by neutralizing some of the emitter degeneration negative feedback we can have some voltage gain. Now the voltage gain is set to 3.5, and it's highly dependent on the 3.3k resistor and the voltage divider at the emitter. The higher the 3.3k resistor the more gain. The lower the 180ohm resistor the more gain and the higher the 560ohm resistor the more gain.
