28 W x4 Hi-Fi Bluetooth Amplifier with USB & SD Playback

HiFi amplifier with radio, BLUETOOTH,

SD, USB player

RMS Power Output: 28Wrms * 4 (4Ω)
Frequency Response: +/-3dB , 100Hz-20kHz
Impedance: 4/8/16 Ohm
T.HD: <1.0%
S/N Ratio: >90dB, Mic <80dB, Line>80dB
Microphone sensitivity: 10mV
Microphone : Talk over priority
USB/SD Flash Memory Support: Up to 32GB
Digital File-type Playback Support: MP3, WMA, WAV
Power Supply: 230V Switchable