The noise floor of the LM386 possible improvement

Dear folks,

Did somebody tried to improve the noise floor of the LM386 by adding the 10k resistor and 10n capacitor in series between pin 8 and the output pin as it was published in the Oklahoma QRP News Letter and then after by KA4UOS in Sprat nr.79 please?

I am interested in the results...

Thank You for responses in advance.

73 - Petr, OK1RP