Subtonic Audio is a fellow boutique audio firm dedicated to pioneering innovative IEM designs and crafting new technologies tailored to meet the demands of audiophiles and musicians worldwide.

Symphonium Audio takes great pride in being the exclusive designated manufacturer for Subtonic's flagship products, including the STORM. This stands as a testament to our unwavering commitment to high standards and exceptional craftsmanship.

Our partnership with Subtonic Audio is also centred on pioneering technological developments such as FLAT™, granting our products a unique edge. By integrating these technologies into our earphones, we offer our users distinct technical advantages.

Altalune Audio comprises a team of expert cable craftsmen renowned for their meticulous attention to detail and unwavering passion for handcrafting audio cables.

Symphonium has proudly collaborated with Altalune Audio since the release of the Helios, working in tandem to fine-tune the sound quality of our products.

You may find Altalune Audio's cables bundled with most of our earphones!

Introducing Nightjar Acoustics, a passionate and devoted team of audio enthusiasts dedicated to creating extraordinary handcrafted IEMs and cables.

We at Symphonium are impressed with their meticulous attention to detail and commitment to craftsmanship result in products that are not only aesthetically pleasing but also optimized for high-end audio performance.

The Meteor was born from a collaboration between Symphonium and Nightjar.