This versatile Pa amplifier is perfect for a wide range of applications. Equipped with MP3 playback via a Usb input, simply store your tracks on a thumb drive and play directly from the amp. The digital display allows you to easily monitor important settings. Safety features like overheat and short-circuit protection ensure reliable performance, while the large fan efficiently dissipates heat. The stereo receiver is ideal for public addresses, karaoke, Dj events, speeches, places of worship, and home parties.Specifications:Power Source: Ac 220-240V 50/60Hz or Dc-12V car batteryPower Output: 40W Rms Max, 35W Rms at 10% Thd, 30W Rms at 5% THDOutput Regulation: >84dB@20Hz to 20kHzInput Sensitivities: 3xMic 0.60mV/4.7k , 1xAUX 125mV/470k Frequency Response: 550Hz-18,000Hz 3dbTone Controls: Bass 8db at 100Hz, Treble 8db at 10kHzSignal to Noise Ratio: 60dbSpeaker Output: 4 , 8 , 16 Dimensions: 11.6x11.57x4.5 inchesWeight: 5.17kg