FATfrequency (better known as FATfreq) is one of Asia’s leading custom IEM companies, renowned for handcrafted, performance-focused products that are built and tuned in Singapore.

By controlling the entire process in-house, from design to final assembly, FATfreq has become a distinctive voice in the IEM landscape, developing new technologies and delivering audiophile-grade sound with pro-audio reliability — all while remaining competitive.

Blending technical expertise with artistry, FATfreq also collaborates with designers and crafters to create unique, one-of-a-kind faceplates, giving musicians both professional-grade audio solutions and a signature piece of wearable art.