Description SonicGear StudioBox 2-HD Hi-Fidelity Home Bluetooth Speaker Features : Total System Power: 70Watt (RMS) Bluetooth 5.0 RCA Input Optical Input Channel 2.0 Built-in DSP for Voice Enhancement, Movie & Music Master Volume Control DC19V / 1.89A (Adapter) Bass Reflex Tubes x 1 Distortion: <1% S/N ratio: 85 dB Frequency Range : 40Hz – 20K Hz Material : MDF / ABS Fabric Cloth Speaker Unit : Speaker : 1 x 50W Full-Range 4″ Driver : 2 x 10W 1.25″ Tweeters Product Dimension : Speaker Dimension : Length 287 x Width 178 x Height 156 mm