Bluetooth audio amplifier, small and practical amplifier for bookshelf/computer/desktop/speakers, connect it to your Phone/MP3 player/CD/TV/PC/Echo Dot as input, 50Watt X 2 (4ohms, 20 Hz - 20 kHz, 0.5% THD) can drive speakers; Home Hi-Fi 2.0 integrated amplifier, Exclusively designed for the customers who pursue HiFi sound