The Anchor Audio AN-MINIDP/EM speaker monitor is the most powerful, smallest system in the market. The AN-Mini is battery-operated so you can take it anywhere. It delivers a powerful 109 db of sound, which will project clear, intelligible speech to audiences up to 50+. Just switch it on and you are ready for any indoor or outdoor assemblies. You can also connect your iPod, MP3 player, or CD Player to the AN-Mini. Perfect for any school event, special event, classroom, or cheer squad.