I've built this one some some time ago and his now my bench test audio amplifier, it works nice and if it has to much gain for the part I am testing I just connect the input to the second preamp stage as stated in the original article by ke3ij.
I built it because my test LM386 amplifier was behaving incorrectly and I could not trust him anymore, I guess that there were some problems in the solder, it was open air soldered into a baby milk box, didn't bothered to find out what was the issue...decommissioned!
And the lousy photo:
Here working as the audio output stage for the BITX FM demodulator tests.
There's a 9V1 zener for power supply regulating (on the left top of the board) but is not connected normally, I just connect to 12 or 9V whichever is available.