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Edifier S351DB - 2.1 Active Speaker System The Edifier S351DB is a premium 2.1 powered speaker system delivering room-filling, high-quality sound for your home, computer, and gaming needs. It features a built-in amplifier, advanced sound control, and versatile connectivity options for an immersive audio experience. Key Features Powered 2.1 speaker system with built-in amplifier (no external amp required) Bluetooth 5.0 with Qualcomm aptX for high-quality wireless audio Multiple inputs: Digital Optical, Coaxial, PC/AUX dual analog inputs 150W RMS total power output for immersive sound Dynamic range control to enhance quiet sounds and reduce clipping Side panel manual controls for bass, treble, and volume adjustment Two bookshelf satellite speakers with ¾-inch titanium dome tweeters for clear highs Wireless remote control for input selection, volume, playback, and power Specifications Total Power Output: Left/Right 21W + 21W RMS Bluetooth Version: Qualcomm 3003 V5.0 Frequency Response: 51Hz - 20kHz Inputs: Line In 1, Line In 2, Optical, Coaxial, Bluetooth Driver Unit: 13mm tweeter + 4-inch mid-woofer Signal-to-Noise Ratio: ≥85dBA Input Sensitivity: Line In1 R/L: 500±50mV; Line In2 R/L: 600±50mV; Optical/Coaxial R/L: 350±50mFFS; Bluetooth R/L: 700±50mFFS Manual Controls Easily adjust bass, treble, and volume using the three knobs located on the side panel of the primary speaker. The power indicator light shows when the system is active. Titanium Dome Tweeters The two bookshelf satellite speakers feature ¾-inch titanium dome tweeters that produce clear, crisp highs across all music genres, videos, and movies. Wireless Remote Switch between optical, coaxial, auxiliary, and Bluetooth inputs remotely. Control volume, playback, and power on/off from a distance with the included wireless remote.