Global Trade Identification Number. A built-in vocal eliminator reduces up to 50 percent of original vocals recorded on center channel of non-karaoke tracks. 100 Vocal Effects with powerful 24/56bit Multi-DSP processing. DSP Pitch Correction will tune your voice to the range of any key you choose. Vocal Eliminator will reduce up to 50 percent of the original vocals that are recorded on the center channel of non-karaoke tracks. MPX Left/Right Mono Selector (Vocal Cancel) for Multiplex karaoke. The SingTools is a mixer featuring pitch control, vocal eliminator and a wide range of vocal effects.