Developed in Singapore by Tsuru Universals, FATfreq offers cutting-edge technology for artists, music lovers, and professionals who refuse to compromise. As the company's best-selling earphones with a reference tuning and flat frequency response, they provide complete transparency and clinical characteristics, making them the perfect tool for those who demand perfection on stage and in the studio.
StagexStudio Technology
This Signature series model features a built-in switch that can be turned on and off to boost low frequencies and "flat" sound characteristics, allowing you to customize them both on stage and in the studio.
Linear Impedance
FATfreq uses proprietary schemes to correct non-linear impedances in multi-driver earphones. Different output impedances of all your devices lead to differences in frequency response. Using this technology ensures frequency response consistency of IEM when connected to any device - whether it be a microphone block, mixer, phone, or specialized portable player.
Signature Sonar La Trompa Technology
Inspired by the anatomy of a traditional French horn, FATfreq utilizes the exponential curvature of the horn to adjust the gain and enhance the tonality of high frequencies through acoustics. Provides smooth, natural sound of high frequencies, backed by a pleasant timbre on the mid and low frequencies.
Phase Alignment
The absence of DSP in IEMs means that phase alignment in multi-driver earphones needs to be done with acoustic delay. Using proprietary structures, engineers were able to align low, mid, and high frequencies in a way that consistently reaches your eardrum. Providing the accuracy and sound resolution required on stage and in the studio.
Package includes:
- Earphones
- 3.5mm cable
- Cleaning tool
- Silicon ear tips set (S/M/L)
- Manual



















