The S351DB from Edifier is an active 2.1 speaker set with two compact 2-way satellite speakers and a modest subwoofer. Combine this 2.1 set with your computer, television or game console for an ultimate experience of movies, music or while gaming. The subwoofer has two line inputs, both a coaxial and optical digital input and Bluetooth aptX 5.0. Stream your music wirelessly from your smartphone and use the S351DB as a compact and good sounding HiFi set. By applying a 19mm titanium dome tweeter, 8-inch subwoofer, Digital Sound Processing (DSP) and Dynamic Range Control (DRC), this 2.1 set delivers an impressive sound quality. Volume control and Bluetooth streaming functionality are easily controlled with the included Edifier Remote. The volume, bass and trebble can be adjusted on the speaker itself.