TPA6120A2: output impedance

Hi 

Follow TPA6120A2 spec simplified Schematic ,What is the headphone output impedance?

FRANK1：

Thank you for contacting TI China E2E forum and choosing our products as part of your solution. Regarding your query, headphone output impedance greater than 8 ohms.

Thanks.

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luke lin：

why 8ohm？It seems 39.2ohm+13 ohm(TPA6120A2 Output resistance) ？

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FRANK1：

You ask headphone output impedance, it's 50ohm for this IC output impedance.