The device integrates two core functions: cassette playback and AM/FM stereo radio, adapting to both traditional cassette media and wireless radio usage scenarios, making it highly practical. The factory-installed Megabass subwoofer technology is Sony's signature audio technology, effectively enhancing low-frequency performance and making cassette music and radio programs sound more layered and atmospheric. The AVLS hearing protection function limits peak volume, effectively protecting hearing with long-term use.