Hammond F-100 kaiketi.
Model F-100 Extravoice (1961-1964)
Derided by organ fans, this is nonetheless a very significant product. It descends from the Novachord and the Solovox, and is thus not an organ at all, but would be better described as a synthesizer oriented toward string and woodwind sounds (sort of an electronic Mellotron?). Choice of 3 different polyphonic sounds for each of left and right sides of the split keyboard. The "extra" voice is a mono, solovox type circuit which can be layered over the right half of the keyboard. This voice has rather extensive options for timbre, and 4 octave tabs allow a very wide range, or "stacked" sounds. Instant antique vibe.
http://theatreorgans.com/hammond/F100_frt.jpg
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