Check the listing for details. TC HELICON Voicelive Harmony Correction Effects Vocal Processor. Condition: Used. Listed at 225.00 USD. Enhance your vocal performances with the TC-Helicon Voicelive Harmony Correction Effects Vocal Processor. This multi-effects processor is specifically designed to improve the quality of your voice and help you achieve the perfect pitch. It's perfect for musicians and professionals who want to take their vocals to the next level. The TC-Helicon Voicelive Harmony Correction Effects Vocal Processor is easy to use and comes equipped with a range of features that will help you achieve the perfect sound. Whether you're a beginner or an experienced professional, this processor is the perfect addition to your setup. It's ideal for use in the studio and on stage, and is compatible with a wide range of musical instruments and gear.