Bluetooth 5.0 streaming range up to 39ft(12m), with bass and treble control, Simple compact design but practical and powerful, Adopt TI TPA3116D2 chip to get clear and clarity sound, no audible noise, dead silent when nothing is playing through it; Advanced circuitry design, built-in speakers protection circuit, best for bookshelf/computer/desktop/speakers in your home; Home Hi-Fi integrated amplifier, Exclusively designed for the customers who pursue HiFi sound; Ship with power adapter and power cord, you can use directly; Perfectly suited for your desktop or a smaller space in your home or office, Aluminum shell to sure high quality, 24-month warranty, you can return the item if you have any problems. Model BT10A MAX Power Output 50W x 2 Terminating Impedance 2-8Ω Input Mode Bluetooth + 3.5mm AUX Output Mode Speakers Out Input Sensitivity ≤ 280mV Frequency Range 20Hz - 20kHz (±1 dB) THD ≤ 0.04% SNR ≥ 98dB Chip Set Texas Instruments 3116D2 Bluetooth Transmission Distance Up to 39ft/12m DC Input Range 12-24V Power Supply 19V/4.74A