This amplifier has an USB/SD input that allows you to play MP3 files or connect to a computer. Two microphone inputs, allowing you to talk or sing to one or more people at the same time. Support FM stereo transmission. Compatible with Bluetooth/RCA input, easy to connect to smartphones, tablets and other Bluetooth devices. 2-channel receiver with stereo amplifier offers 300W 300W output power (maximum music output power 600W), provides excellent sound quality, clear and detailed sound. Infrared remote control, excellent access and communication between human and amplifier. Specification: Model: BT -298A Color: Black Size: 18*13,6*5,5 cm Material: Iron Speaker Impedance: 4-16 Ω Signal-to-noise ratio: >92dB Input Power: DC 12 V/5 A AC 220 V-240 V/50 Hz-60 Hz Input Impedance: 47K Maximum output power: 300 W 300 W Frequency: 20 Hz-20 kHz Input sensitivity: 0,25 mV-220 mV FM Frequency: 87,5 - 108 MHz Distortion Ratio: 0,05% Package includes: 1x amplifier 1x remote control 1X INSTRUCTION MANUAL