... woofer,horn tweeter 4.RMS power: 300W pa system TV-15DBuilt-in MP3 player and DVD playerUSB,SD connector ... the range of 300 Watts RMS.2. Low signal to noise ratio.3. All new design of ... Dual channels UHF or VHF fix frequency wireless system optional (UHF have 50 to 70 wireless transmission ... memory card,MP3,MP47.Built-in advanced receiver modular system with two wireless mics (handheld ,lavalier ,and ...