Uz uredjaj stiže adater i on je uključen u cenu (48V Power Supply) Fosi Audio BT20A Bluetooth 5.0 Amplifier 2 Channel Stereo Amp Receiver Class D Amplifier For Home Audio System 100W X 2(4 ohms, 20 Hz - 20 kHz, 0.04% THD), comes with a 24V power supply. If your usage scenario is smaller, it can also drive larger speakers, such as those rated at 280 watts (8 ohms) and 320 watts (4 ohms). Please note that this is applicable only for passive speakers. Advanced circuitry design, built-in speakers protection circuit, best for bookshelf/computer/desktop/speakers in your home; Home integrated digital amplifier, 24-month warranty, you can return the item if you have any problems; Small simple compact design but practical and powerful, Hi-Fi Bluetooth amplifier exclusively designed for the customers who pursue HiFi sound; Bluetooth 5.0 core, up to 33ft connection range guarantees low signal delay. No pop, no audible noise when Bluetooth connection is established; Specifications Specifications Details Power supply range 12v-24v THD ≤ 0.5% Frequency Range 20Hz - 50kHz (±2 dB) SNR ≥ 98dB Input sensitivity ≤ 280mV Bluetooth transmission distance 28ft Terminating impedance 2Ohm - 8Ohm Output power 100W + 100W Input mode Bluetooth and Analog Bluetooth Name Fosi Audio Bluetooth chip ATS2853 Power supply 24V 4.5A What‘s In The Box？ Item Quantity Amplifier 1 Power supply 1 AC power cord 1 User’s Manual 1