The subwoofer runs on these silicons:

STM32F 32-Bit microcontroller

NTP7513 audio amplifier by N CITRON (formerly NEOFIDELITY).

PCM1808 Stereo A/D Converter from Texas Instruments

CSD16322 Power MOSFET from Texas Instruments

On the rear there is the same CN3704 Standalone Li-ion Battery Charger we found on the ENEBY 8".