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A3t Custom In-Ear Monitor from 64 Audio

FOH Staff • New Gear • November 18, 2021

64 Audio’s new A3t Custom IEM is a three-driver model designed to combine advanced technologies with an accessible price point.

More details from 64 Audio (

64 Audio, the leader in custom and universal fit in-ear monitors, is proud to announce the launch of the A3t Custom in-ear monitor. Now available with an MSRP of $899 and with a special introductory offer of $810 for a limited time, the 3-driver IEM includes 64 Audio’s famed technologies at an accessible price point.

“Our new A3t is a perfect tool for any audio engineer or musician looking for a neutral, balanced and musical reference monitor for live and recorded performance,” explained Vitaliy Belonozhko, 64 Audio founder and chief sound designer. “And, in typical 64 Audio fashion, we are continuing to make our revolutionary technologies more accessible to audio professionals. With A3t, our tia technology is available at a new lower price point, along with LID and our patented apex and 3Dfit technologies.”

The goal with A3t was simple. 64 Audio wanted to make a reference monitor that rivals products more than five times its price. This simple yet powerful arrangement of balanced armature drivers and crossover components achieves this perfectly.

“One of the first things you think when playing your initial reference track is ‘This sounds right’, pure and simple,” Belonozhko continued. “Usually when listening to an audio product, especially as a sceptic, you are able to quickly latch onto something that could’ve been done better. The A3t simply reproduces the mix without anything distracting you from the music. Everything sits in its proper place…capable bass, present mids, and smooth yet detailed highs. To fans of our A6t and A12t, this will be a very familiar sound.”

Additional A3t specifications and features include:

  • Frequency Response: 20Hz — 20kHz
  • Crossover: Integrated 3-way passive crossover
  • Transducer Configuration: 1 High, 1 Mid, 1 Low
  • Sensitivity: 109dB/mW (109dB @ 1kHz @ 1mW (105mV))
  • Impedance: 11Ω @ 1kHz
  • Isolation: 20dB w/ m20 module, -15dB w/ m15 module. Ships with M20 Module standard

tia is a technology exclusive to 64 Audio that works by eliminating sound-altering tubes and dampers. Sound produced by the tia system is able to disperse freely and effortlessly, yielding an incredibly smooth and musical frequency response.

LID is a correctional circuit that presents a flat impedance to the amplifier, resulting in a sound devoid of artificial coloration. Exclusive to 64 Audio, LID ensures a consistent frequency response regardless of the source, making it perfect for musicians plugging into a variety of equipment.

3DFit is a new way of manufacturing custom in-ear monitors that preserves the details of your ear impressions for the most comfortable-fitting IEMs possible.

64 Audio’s patented Air Pressure Exchange (apex) is a pneumatically interactive vent that releases air pressure in a sealed ear canal. This venting alleviates listener fatigue and opens the soundstage. Unlike competitor venting solutions, apex preserves the bass frequencies and produces a more open soundstage, which helps the listener distinguish individual instruments. The apex module is also engineered with features to prevent vent-clogging and wind noise. Its compact and durable construction is virtually maintenance-free, designed for the most demanding users.

From studio to stage to sophisticated home audio environments, 64 Audio has created the industry’s most innovative universal and custom-built in-ear monitors available to date. The company was founded in 2010 by Vitaliy Belonozhko, a sound engineer who has been working with musicians and production companies for nearly two decades. He discovered the advantages of IEMs over traditional floor “wedges” and recognized that a better solution to in-ear monitoring was needed. Today, 64 Audio supplies products worldwide to some of the best-known musicians, singers, and engineers in the world, as well as discerning audiophiles who demand nothing but the best sound reproduction from their systems. With new and unrivaled technologies such as apex, LID, tia and 3D-Fit, 64 Audio excels in challenging traditional earphone designs to bring-to-market unique and innovative audio products.



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