Karaoke is sure-fire fun at any party, and Numark's Sing Master brings that fun to a new level. That's because Sing Master isn't just any karaoke system. It's got 60 exclusive vocal processing settings that add the perfect touch to any vocal performance. Add dramatic reverb, sound like a Pop or Rock Star, Rap artist or even alter your voice to sound like Barry White or PopEye. It's endless fun, unlike every ordinary karaoke machine out there. This rugged speaker streams your favorite YouTube karaoke music from any Bluetooth device and pumps out great sound through its 8-inch 2-way speaker and powerful 50-watt amplifier. Its built-in sound-reactive, colorful LED lights-with multiple display patterns-deliver great visual effects that turn the ordinary into the extraordinary! With a USB charge port to recharge your devices and a telescoping handle and built-in wheels, Sing Master is as convenient to use as it is exciting to hear! Spice up your performance with 60 built-in vocal settings. Choose between 4 groups of effects ranging from core effects to novelty effects. Each grouping has set number of effects to choose from and can be turned off to use your natural voice.