However, according to Raven, there can be multiple Jack-O'Valentines somewhere who can take the place of the first Jack-O '.
3.
I suppose it would be Jacks In The Boxes, considering there would be multiple Jacks and therefore multiple boxes, unless they are all in the same one, which would be terrifying.
4.
The CP-251 features an LFO with adjustable rate and square and triangle outputs, a lag processor that can alter the rise and fall of a signal, a multiple jack that passively joins four patchcords together, a white noise generator, two mixer that can process four signals into one, and a sample and hold.