KTA-450 USB is PA Amplifier with inbuilt MP3 Digital Player. Built with a aesthetically designed plastic front panel, it is an elegant, state-of-the-art product. ? The Digital Player plays back clear, high quality Mp3 music from an USB drive. A remote control is provided for easily operating the Digital Player from a distance. This, combined with 2 microphone inputs, 1 Aux input and provision for multiple speaker connection makes this product ideally suitable for a variety of music programmes and public address application. ? 2 Mic & 1 Aux Input. ? Built-in MP3 player with USB reader and remote control. ? Line Output for connecting to a Booster Amplifier. ? Tone for cutting excessive high frequencies. ? Instant transfer to DC Power (Car Battery) if ? AC power fails. ? Monitor LED for output monitoring Power Output 35W Max., 28W RMS at 10% THD, 25W RMS at 5% THD Input Channels 2 ? Mic. 0.5mV/2.5k , 1 ? Aux 50mV/330k Frequency Response 100-12,000Hz ?3dB Signal to Noise Ratio 58dB Tone Controls Tone: -10dB at 10kHz Line Outputs 250mV/3.5k Speaker Outputs 4 , 8 , 16 & 100V Digital Player MP3 Player with USB reader Power Supply AC: 220-240V 50/60Hz, DC: 12-14V Car Battery Dimensions W230?H95?D260 mm Weight 4.5kg "