Which device shares the same range as the harpsichord?

The harmonium shares the same range as the harpsichord primarily because both instruments typically cover four to five octaves. The harpsichord, an early keyboard instrument, is characterized by its plucked strings and is renowned for its distinctive, bright sound. Similarly, the harmonium, which is a free-reed instrument operated by a keyboard, usually has a range that aligns closely with that of the harpsichord, depending on the specific model and design.

While the vibraphone, marimba, and organ each have their unique characteristics and ranges, they differ significantly from the ranges typically found in the harpsichord. The vibraphone often spans about three octaves, the marimba has a range that can extend wider but still doesn't match the standard ranges of the harpsichord, and the organ varies greatly depending on the type but is generally associated with larger ranges that exceed that of the harpsichord. Thus, the harmonium is the most appropriate answer when considering range compatibility with the harpsichord.