Eventide H910, Harmonizer Plug-in (Download), Emulation of the legendary H910 hardware device from the 1970s, Real-time pitch change and harmonization via MIDI, Envelope follower for pitch control, Anti-Feedback modulates the pitch around the sound from a subtle to brutal effect, Optionally switchable ""glitching"" of the original H910 hardware, Delay function for Slapback sounds to Feedback chaos, Contains H910 dual with two parallel units for stereo effects