... quality power amplifier 1000w multifuction power amplifier1000w pouplar power amplifier monitor professional amplifier with USB/SD,MIC INPUT,Big VFD ... Specification Output power: 300W+300W Power tube: Big power tube x 8 (TOSHIBA) Impedence: 300ohm Frequency response : 20Hz-20KHz at ... Compatible with VCD/DVD/CD/TV and other audio input monitor professional amplifier with USB/SD,MIC INPUT,Big VFD Display ...