Four brands, one Dutch engineering heritage — each pursuing excellence in its own way.
Siltech Group represents the shared pursuit of excellence that unites Siltech, Crystal Cable, HMS Elektronik, and Sphinx Audio — each distinct, yet each part of a greater family, each crafted with its own philosophy yet connected by the same pursuit of precision, purity, and musical truth. Our brands do not compete — they complement. Each brings something unique to the world of high-end audio, forming a complete ecosystem built on 40 years of craftsmanship and innovation.
Since our inception in 1983, Siltech has become one of the more established names in the high end audio industry, with strong brand recognition worldwide. Being the origin of our company, all our other brands originated from or carry the influence of the Siltech DNA. In the 1980’s and 90’s, Siltech owned, developed and produced Sphinx Audio, and Crystal Cable originated from Siltech in 2004.
Driving our development
Siltech Group is pioneering the development and production of high-end audio equipments. By leveraging decades of research, a first-class production facility, and the highest quality materials, we bring the ultimate musical experience to the homes of music lovers around the world.
Driving our development
International Audio Holding is pioneering the development and production of high-end audio equipment. By leveraging decades of research, a first-class production facility and the highest quality materials, we strive to bring the ultimate musical experience to the homes of music lovers around the world.
SILTECH
Siltech is reckoned to be a purveyor of some of the finest hi-fi equipment in the world. That reputation did not come easily – it took decades of hard work and thorough attention to detail. All underpinned by a rigorous scientific method and a commitment to excellence in all things. Add a touch of passion for music. Now you understand the story of Siltech.
CRYSTAL CABLE
Crystal Cable’s ultimate goal is to reveal the virtuosity of instruments, the subtleties of performance, and artist’s emotions in making music. Crystal Cable products enable you to experience the music as the artist intended to have it heard, virtually placing you right into that performance. Pure and without color, like a time machine for music lovers worldwide that brings an artist’s vision to life before your eyes.
SPHINX AUDIO
A Legacy Reborn: The Evolution of Sphinx. Carrying a legacy from the past, Sphinx has been a part of the Siltech family since its inception.
From the legacy of Siltech and Crystal Cable comes a new vision for sound. Sphinx is more than a new brand — it is where decades of research, precision craftsmanship, and technological mastery come together to shape the future of high-end audio electronics.
HMS ELEKTRONIK
Established in 1975, HMS Elektronik, under the passionate leadership of founder Hans M. Strassner, has become synonymous with technology-driven, quality audio products. Known for its engineering expertise, HMS has built a dedicated following of audiophiles who value precision and performance.
HMS Elektronik is now part of Siltech Group since 2024.