Eventide H910 Harmonizer

Got his unit on loan for a few weeks so I made a quick demo ’m not really experienced with the unit so I’m sure it’s capable of much more than the video shows. What is it? The H910 (2U rack unit) was the first studio harmonizer produced by Eventide; designed by Tony Agnello it was first demonstrated at the 1974 AES show and released in 1975. The unit number ’910’ is inspired by the Beatles “One After 909“ - the sound became familiar on many recordings of the time: Jon Anderson (prototype