This circuit has high input impedence and no deadzone for the inpuits between +0.6v and -0.6v. The input:output is almost 1:1. The output transistors should be a matched pnp-npn model to have a 1:1 match of positive and negative parts with the small resistors to compensate for minor diferences. The first transistors are biased and always-on to eliminate the deazone and add input impedence.
