FATfreq In-Ear Monitors
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FATfreq In-Ear Monitors

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fatfreq x effect audio quantum iem inside a round carrying case

FATfreq is a Singapore-based company that designs and creates world-class IEMs at affordable prices. FATfreq In-Ear Monitors are meticulously hand-built and carefully tuned by hand, ensuring every IEM delivers a blend of sound and quality for both casual and professional applications.

Browse our collection of FATfreq In-Ear Monitors and discover detail-centric IEMs like the Quantum or Bass-Heavy Monstrosities like the Maestro Mini. Buy yours online today.


Where are FATfreq IEMs made?

FATfreq IEMs are built in Singapore. Founded in 2020, FATfreq is one of the newest players in the in-ear monitor space, known for their bass-centric IEMs like the Grand Maestro and industry-leading technologies like Bass Cannon. 

FATfreq is a boutique IEM manufacturer committed to creating the highest-quality IEMs. Each model is hand-built and meticulously tuned to deliver exceptional sound, lasting comfort, and dependable durability.

fatfreq technician wiring balanced armature drivers


FATfreq IEM for Studio

FATfreq x Effect Audio: Quantum IEM

fatfreq x effect audio quantum iem front shells focused view

Price: $779.00


Lightning-fast planar drivers for unparalleled detail, clarity, and punch

FATfreq is best-known for their bass-heavy monster IEMs like the Grand Maestro, Maestro Mini, and Deuce, but that doesn't mean they can't go the other way and create an ultra-detailed IEM. That's exactly what they've achieved with the Quantum.

In collaboration with Effect Audio, the FATfreq x Effect Audio Quantum IEM is designed to deliver a combination of control and precision to your music experience.

Featuring a high-performance Planar Driver for effortless clarity and detail, Bass Cannon Technology for next-level bass response, Noah SuperStage Module for an immersive 3D-like soundstage, and a premium Ares S II Cable for ultra-clean connections, the Quantum extracts every musical detail effortlessly, while delivering the punch and rumble you've come to know from the brand.

Experience natural vocals with breathtaking detail and immerse yourself in the Quantum's massive soundstage. The FATfreq Quantum will transform every listening session into a special occasion.

fatfreq x effect audio quantum iem with copper cable

Pros
  • Lightning-fast Planar Driver delivers gobs of clarity and detail without harshness.
  • Bass Cannon technology separates sub-bass and mid-bass frequencies for a clean bass experience.
  • Clean, clear, and natural vocals and instruments playback.
  • Detailed and airy treble without harshness.
  • Comes with a high-end Effect Audio Ares S II Cable.
Cons
  • Expensive for a single-driver IEM
  • Some might not like the unusual shape and design.

FATfreq In-Ear Monitor for Bass Heads

FATfreq Maestro Mini IEM

fatfreq maestro mini iem with 2-pin cables

Price: $496.00


Bass Cannon technology delivers nuclear-power low-end rumble and punch in any music

FATfreq is known for creating incredible bass-heavy IEMs. One of their most impressive in-ear monitors right now is the FATfreq Maestro Mini.

Don't let the word "Mini" fool you. Under the hood, the Maestro Mini features a powerful Dynamic Driver + Dual BA hybrid setup for powerful bass and smooth tones. With Sonar La Trompa technology, the Maestro Mini delivers natural-sounding cymbals and strings while maintaining accurate vocals and instrumentals.

FATfreq's Bass Cannon technology combines proprietary dynamic woofers, bass chambers, and acoustic damping networks to achieve the deepest bass ever in an IEM - an eye-watering 30 dB. Even more impressive? The Maestro Mini retains excellent control over frequencies below 150Hz, delivering a masterful combination of low-frequency rumble, slam, and punch without a hint of muddiness or bloat.

Bass-heads will love the Maestro Mini's incredible bass power, while audiophiles will adore it for its natural tone and outstanding clarity. Whichever camp you're on, the Maestro Mini will bring energy and excitement to every listening session. 

fatfreq maestro mini front faceplates with yellow semiquaver logo

Pros
  • Brain-rattling bass power.
  • Strong sub-bass rumbles. Visceral mid-bass punch.
  • Natural vocals and smooth treble.
  • Small, lightweight shells offer excellent comfort and fit.
Cons
  • Bass-centric tuning will not appeal to die-hard audiophiles.
  • Lacks outright resolution compared to other IEMs in the price range.
  • Expensive for an IEM with a niche tuning.

FATfreq IEM for Bass-Heavy Music

FATfreq x HBB Deuce IEM

fatfreq x hbb deuce iem with red blood cable

Price: $248.00


Dual Dynamic Driver and Bass Cannon technology for hard-core bass lovers

The Deuce is a collaboration between FATfreq and top YouTube IEM reviewer Hawaii Bad Boy. (Bad Guy Good Audio Reviews).

Carefully tuned using HBB's expertise, the Deuce delivers bass-head levels of rumble and punch, while offering a delicate presentation of vocals and instruments. These elements combine to give you an exciting yet smooth music playback in just about any genre.

Underneath the compact black resin shells are two dynamic drivers imbued with FATfreq's 2nd Generation Bass Cannon technology for a powerful rumbling sub-bass and a booming mid-bass. If the 25dB sub-bass boost isn't enough, the Deuce comes packaged with a Bass Boost Impedance Adapter for added bass and a more visceral listening experience.

The FATfreq x HBB Deuce is a bass-head's dream, delivering nuclear levels of bass while keeping a smooth and natural sound. It is the IEM for listening to bass-heavy music like R&B, Hip-Hop, EDM, Pop, and more.

fatfreq x hbb deuce iem with red coiled cable

Pros
  • Thundering bass power
  • Wide bass range. Sub-bass goes very deep.
  • Vocals and instruments sound natural and smooth despite the strong bass.
  • Sleek and compact shells offer good comfort and fit.
Cons
  • Bass-heavy tuning might not appeal to those looking for a balanced sound.
  • Very little inside the box considering the $250 price tag.

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