Belva 15-inch DJ Speaker 2-way Powered Professional PA System with Bluetooth, USB, SD Card Slot and MP3 Playback [BDRS-15BLU] BLUETOOTH BUILT-IN: Eliminate the need for tangled cable connections by streaming your music directly to the speaker from your Bluetooth device. AMPLIFIED POWER: This 15" speaker blasts 300 watts of crystal clear RMS power thanks to the internal class D amplifier technology. This highly efficient speaker can play for extended periods of time without overheating. MAXIMUM FLEXIBILITY: The back panel of this speaker features Mic, XLR, Line and RCA inputs as well as SD and USB slots allowing you to play your music from multiple sources. FINE TUNE YOUR SOUND: Every show needs perfect sound, this speaker provides independent gain controls on the mic and line input channels as well as high and low EQ controls and a master level control. PROFESSIONAL DESIGN: This speaker can be used with any standard 35mm pole stand, stacked on another speaker or used as a stage monitor. It also features a molded carry handle for easy portability.