Singtrix is the world’s only plug-and-play karaoke system that uses studio quality vocal effects designed to make "bad singers sound good and good singers sound amazing!" Sing in-tune to your favorite hits with confidence. Just plug into the headphone output of your mobile device or computer and start singing. Singtrix will tune your voice to the music track and add studio quality effects such as 4-part harmony or choir, reverb, delay and so much more.The simple plug and play system is powered by patented state-of-the-art professional live vocal effects technology… No need to pay for music content since it was designed to work with the thousands of FREE YouTube Karaoke videos available on line. Works with your existing mp3 music, apps and more… Voice-cancellation option creates karaoke tracks on-the-fly from standard songs… The entire Singtrix system including Studio Effects Console, Mic and 2.1 Speaker are specifically tuned and designed to provide studio quality sound making singing experience exciting, fun and transformative For all skill levels from beginner to pro Works with instruments in place of karaoke tracks, tuning your voice to chords played on your guitar or keyboard .The natural tuning effects act like training wheels for your voice and can help improve your singing .Ultra-responsive and dynamic, facilitating proper singing technique. Reduces vocal fatigue and strain, making singing effortless for longer practice sessions.