Sonic disruptor

A sonic disruptor is a type of directed-energy weapon that uses disruptor technology with a medium of intense sound to achieve blast effects. This results in there sometimes being no visible beam emitted from the weapon. Pistol weapons of this sort were emplyed by the residents of Eminiar VII in the 2260s. (TOS episode: "A Taste of Armageddon")

Sonics are very basic disruptors, without transtator technology that would allow them to be phase disruptors. This difference was exploited by the Klingons in the early 23rd century, who kept the powerful transtator-based disruptors for themselves, but bought and sold the cheaper sonics to lesser powers, aided by the fact that many universal translators simply rendered the word "disruptor" when deals were made, regardless of the operating mode of the weapons in question. (TOS novel: "The Final Reflection")