"Basic stereo" refers to a simple sound system that plays music or audio using two speakers. It does not include any additional features or fancy equipment. Full definition
Equipped with basic stereo sound quality the tablet manages to provide adequate sound levels for a single users, but the speakers struggle to offer much more than that. (notebookreview.com)
Audio sources for this slightly - better - than - basic stereo system are AM / FM terrestrial radio, a single CD slot with MP3 and WMA playback, a USB input, and an analog auxiliary input. (cnet.com)
Yamaha has employed the exact same suite of DSP and surround sound effects as the 1400, which includes surround modes like Movie, and Sports, as well as basic stereo. (digitaltrends.com)