Reference Pro SE headphones are designed for vocal enthusiasts: Featuring an additional super tweeter for added richness to vocal mixes. Incredible dynamic response and visualization.
Reference Pro SE provides standard detailing and separation: Using three precision-balanced armature drivers, delivering the accuracy required for monitoring and mixing. An ideal tool for producers and singer-instrumentalists looking to elevate their mixes to a new level.
All headphones are designed and hand-assembled in Singapore.
Super powerful, yet clean bass
FATfreq headphones are known for creating the deepest and most physically impactful bass on the market (in some models reaching up to +20-30 dB). Thanks to patented technologies, this bass does not intrude on the mid frequencies, leaving the vocals and instruments crystal clear.
Bass Cannon Technology
Special acoustic chamber and crossover system achieve a subwoofer effect normally only found in full-size speaker systems.
Additional super tweeter
Reference Pro SE headphones come equipped with an additional tweeter for transparency and richness in vocal reproduction. Audiophiles will appreciate the precise transient response and sound imaging it offers. Reference Pro is available in universal and custom-fit options.
Linear impedance
FATfreq employs proprietary circuitry to correct non-linear impedance in multi-driver headphones. Different output impedances of all your devices lead to differences in frequency response. Using this technology ensures consistent frequency response when connecting IEMs 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 uses an exponential curve of the horn to adjust amplification and enhance high-frequency tonality using acoustics. It provides smooth, natural high-frequency sound supported by a pleasant timbre in the mid and low frequencies.
Phase alignment
The absence of DSP in IEMs means phase alignment in multi-driver headphones must be achieved using acoustic delay. With proprietary structures, engineers have aligned low, mid, and high frequencies to reach your eardrum consistently. Providing the accuracy and sound resolution needed on stage and in the studio.
Package includes:
- Headphones
- Silver-plated copper (SPC) 3.5 mm cable
- Hard storage case
- Set of silicone S/M/L ear tips
- Cleaning tool
- Manual



















