JM singularly produces hand crafted guitar and bass speakers for discerning individuals who demand only the finest. A perfect sound representation with attention to detail and innovation, build with craftsmanship out of the best materials is what can be expected. JM designs speakers with passion, and will continue to broaden and explore the palette of experience, technology and materials to be able to create new pathways towards the golden ratio in professional audio. JM combines clarity, dynamic and precision to achieve the ultimate in guitar and bass reproduction. Additionally offering the possibility to realize technical and optical adjustments according to your personal preferences and wishes.