Edifier R1580MB is one kind of Bluetooth Studio Bookshelf Speaker. This Bluetooth designed for commercial and professional use with two microphone inputs. Due to its low resonance, it is ideal for presentations, lectures and speeches in conference rooms, schools, classrooms and small halls. This Speaker featured with Dual microphone inputs for use as public address system, Bass, treble and master volume controls located on the side panel. Class D amplifier with 4inch bass drivers and 13mm silk dome tweeters. The speaker comes with Wireless remote control with mute and volume adjustment. This Speaker has 100% MDF wooden enclosure to minimize acoustic resonance, Universal 100V-240V power supply. This Bluetooth speaker is compatible with virtually all audio devices, RCA and AUX ports provide a quick and easy way of connecting to your source, ideal for turntables (separate phono pre-amp may be required for turntable). This speaker offering clear and bright voices with increased bass performance thanks to the bass reflex front port. The latest Edifier R1580MB comes with 01 year warranty.