BMB DAS-300 (SE) 600W 4-Channel Karaoke Mixing Amplifier The 10-Band equalizer enables the user to set the audio and mic separately. The sound surroundings setting has six levels so the user can select a setting based upon room size. The latest digital amplifier IC to make the amplifier smaller and lighter while delivers powerful sounds. Six different echo setting so the user can select the most suitable echo for the music genre. Multi-purpose large color LCD panel.