Abstract: A portable dehumidifier device that is capable of controlled dehumidification by providing heat source constantly to dehumidify, also known to be the process of drying, particularly in this invention, the dehumidification is controlled and targeted, and is designed for acoustic guitar (includes classic, folk) or the like, and these instruments are known to be susceptible to dimensional distorsions like bulging or loosening of joints when subject to high humidity conditions. The dimensional distorsions have detrimental effects on the guitars and the like over the expected life span. Such instruments consists of a soundbox constructed various type of woods and parts, being glued together as an assembly commonly known as the soundbox, also with a soundhole made unto the soundbox, and with attached steel or nylon strings over the soundbox as the primary the source for generating vibration thus leading to conversion into audible sound energy.