(1) Double 9-band equalizer.
(2) 4 channel microphone input with unattached modulation, there are two channel
  can connect to the electronic organ or singing.
(3) With grading output jack, it is easy to show the mark of your singing.
(4) With recording output jacks, you can record the music.
(5) Balanced output with cannon plug, it can connect to the power amplifier. Two
  channel signal input can be chose.
(6) It can connect to the equalizer.
(7) With prefect protect function for speaker. It can avoid speaker's over load and short.
(8) It can connect to the main track and the incidental track, it make a better effect of karaoke.
(9) This design is base on the demand of KTV room and ballroom, with American big power
  audio tubes, it can play with 15inch professional speaker.
 
Specifications:
   Output Power： 300W+300W
   Frequency Response： 20Hz-20KHz
   Signal to Noise Ratio： 77dB
   Separation: 55dB
   T.H.D.： ≤0.16% 1KHz
   Power Requirements： AC220V/50Hz
   Weight： 12.4Kg
   Dimensions：(LxHxW) (cm)  42x12.8x33