TAS3251: purpose of the R/C components on OUT A and B

Hi,

1. The output side is zobel network, which is used to dump the output LC resonance. In most cases, TAS3251 doesn't need this network.

2. The capacitor after the LC filter is for EMC consideration. If populated, should be placed just near the output connector pins.

3. The network on the left box are Post-filter-feedback networks. You may find more information in this app note. TAS3251 has very good performance so we don't really need the PFFB. 

https://www.ti.com/lit/an/slaa788a/slaa788a.pdf?ts=1624871341470&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526searchTerm%253DPFFB%2526nr%253D55

 Thanks!

Regards,

Sam