What Is Either/Or?

Either/Or Registration is a system whereby stops can be registered on either one manual or the other. Not to be confused with duplexing or borrowing common in electric action organs, Either/Or utilizes a slider chest and requires no compromise in the finest mechanical action.

M. L. Bigelow and Company has become well known for this system, having utilized it in nearly all of its smaller organs, beginning with Opus 1.