General description Mini HIFI digital Bluetooth audio power amplifier. Adds a single cycle button to easily cycle through favorite music. Features SD/USB interface, 2 Mic inputs, and comes with a remote control. Supports TF Card, AUX, U disk, MP3 format playback, and Bluetooth wireless connection. Includes FM stereo radio and MP3 media player functionality. Equipped with treble, bass, and volume control for easy use. Technical specifications Brand: AUTSOME Model: AK-45 Color: Black Voltage: DC 12V or AC 90-240V Impedance: 4-16 Ω Bluetooth: Supported RMS power: 40W x 2 Peak power: 300W x 2 Channel: 2.0 SNR: 85 dB FM Frequency: 87.5-108 MHz Frequency response: 10 Hz - 20 kHz Size: Approx. 18 x 14 x 6.5 cm (7.09 x 5.51 x 2.6 inches) Rated power: 40W x 2 Rated frequency: 20 - 20 kHz Resolution: 47K Distortion rate: 0.50% Amplifier type: HIFI amplifier Material: Iron Interface Type: Clip Channel: 2.0 channel Compatibility and accessories Includes: 1 Power Amplifier, 1 Manual, 1 Remote