Actually, HiFi is not a type of speaker; any speaker can be a HiFi speaker. HiFi (High Fidelity) is simply a term used by audiophiles to differentiate between low-quality speakers and high-quality speakers. This means that HiFi speakers are merely any type of speaker that could deliver high-quality sound output with clear vocals and immersive bass. Thus, when you hear people refer to a speaker as a HiFi speaker, it means that the said speaker reproduces high-quality sound.