Super Powerful, Yet Clean Bass: FATfreq headphones are renowned for creating the deepest and most physically palpable bass on the market (in some models, the increase reaches +20-30 dB). Thanks to patented technologies, this bass does not "intrude" on the mid frequencies, leaving vocals and instruments crystal clear.
Bass Cannon Technology: Special acoustic chamber and crossover system allow for achieving a subwoofer effect typically only attainable in full-size audio systems.
All headphones are developed and hand-assembled in Singapore.
Reference Pro in-ear headphone provides standard detail and separation with three precision-balanced armature drivers, ensuring the necessary accuracy for monitoring and mixing. An ideal tool for producers and singer-instrumentalists looking to take their mixes to the next level. Reference Pro is available in both universal and custom versions.
Linear Impedance
FATfreq uses proprietary circuitry to correct non-linear resistances in multi-driver headphones. Different output resistances of all your devices lead to variations in frequency response. Using this technology ensures consistent frequency response of IEMs when connected to any device - whether it's a microphone block, mixer board, phone, or specialized portable player.
Sonar La Trompa Technology
Inspired by the anatomy of a traditional horn, FATfreq uses the exponential curvature of the horn to adjust amplification and enhance tonality of high frequencies through acoustics. Provides smooth, natural high-frequency sound backed by pleasant timbre on mid and low frequencies.
Phase Alignment
Absence of DSP in IEMs means that phase alignment in multi-driver headphones needs to be done with acoustic delay. Engineers were able to align low, mid, and high frequencies in a way that harmoniously reaches your eardrum, providing the accuracy and resolution of sound needed on stage and in the studio.
Package includes:
- Headphones
- Silver-plated copper (SPC) 3.5mm cable
- Hard storage case
- Set of S/M/L silicone ear tips
- Cleaning tool
- Manual












































