Removing 4 Philips head screws on every corner of the mainboard enables us to lift it off and see what's hidden behind it.

CSR 57E6 Low power consumption Bluetooth chip

MX29LV160DBXBI-70G 16M flash memory chip

Nsiway NS 4158 2.6W Mono Amplifier (one for each stereo channel)

Nuvoton NPCA110B Audio Enhancing Engine and Codec. It uses Waves MaxxAudio enhancement to combat distortion in high volume levels

PTC PT2308 Class AB stereo headphone driver chip

Unidentified IC, presumably for power management and battery charging

Unidentified IC and big inductor for power regulation