The term "head cabinet" is often used to refer to the top portion of a guitar or bass amplifier that houses the electronics and speaker. However, there are several other synonyms for this piece of equipment. One common term is "amp head," which is just a shortened version of "amplifier head." Other terms include "amp top," "amp stack," and "head unit." These terms are all used interchangeably to describe the same piece of equipment. Whether you're a musician looking to invest in a new amp, or just know someone who loves to rock out, knowing these synonyms for "head cabinet" can help you communicate more effectively and expand your vocabulary.