Auto-Tune Pro, Auto-Tune Artist, Auto-Tune EFX+, Auto-Tune Access, Harmony Engine, Mic Mod and more. Shop and learn about the best plug-ins for pitch correction, vocal effects, voice processing, and noise reduction. All fulfilment is subject to approval by UA. Learn more about Auto-Tune, the music industry standard for pitch correction and vocal effects. First-generation Apollo Twin Thunderbolt and Arrow interfaces are not eligible. Photo of Universal Audio Apollo Twin X DUO Heritage Edition 10圆 Thunderbolt Audio Interface with UAD. Customers must register before September 15th, 2023, to receive their free plug-ins. Offer valid for customers who purchase a qualifying new Apollo Solo HE, Apollo Solo USB HE, Apollo Twin MkII DUO HE, Apollo Twin USB HE, Apollo Twin X DUO HE, Apollo Twin X QUAD HE, or Apollo x4 HE from an authorized UA retailer between June 1st and August 31st, 2023.