The term "preamplifier" refers to an electronic device that packages low-amplitude electrical signals and prepares them for further processing by an amplifier. There are various other words that can be used as synonyms for "preamplifier," depending on the context. One such synonym is "preamp," which is a common abbreviated form of the term. Another synonym is "signal processor," which refers to the process of modifying signal characteristics prior to amplification. Other synonyms for "preamplifier" include "input stage," "signal booster," and "pre-signal amplifier." Each of these phrases conveys the same meaning as "preamplifier" and is interchangeable with it in most contexts.