SingTrix is a karaoke system with voice pitch correction and other sound effects. The machine is essentially a small box that hooks up to a microphone. When someone sings into it, it uses pitch correction software (autotune) and inserts harmonizing vocals to make the singer sound great. SingTrix also allows other cool voice effects such as turning your voice into a guitar or changing a man’s voice into a woman’s. The product comes as a kit containing a custom microphone with stand, the SingTrix box itself, and an amp. There is a companion phone and tablet app that streams songs and karaoke lyrics. Despite being impressed by the product, no sharks jumped in on a deal.