MA-3000KII 750W Karaoke Mixing Amplifier 30-day money back guarantee & 1-year limited warranty Audio Output: 300W + 300W @8 ohm / 750W+750W @ 4 Ohm USB and SD Readers to playback MP3 Music Remote control for Master music volume, Master Mic. volume, Key and Input select Free Two DM-11PRO Wired Microphone