When I load the output of the circuit that I simulated (NakMod.jpg) with a 10 nF cap, it implies an output impedance of about 13 ohms per side. So I guess that the emitter follower amps further reduce the output impedance.
Also, I changed my JFET model to the JFET you are using and the gain went up to 1.4, so that's about a 3 dB gain. The harmonic distortion is about 0.5% at 1 kHz.