64 Audio tia Fourté In-Ear Headphones
Best high-end in-ear monitors for audiophiles seeking immersive, spacious sound quality.
The 64 Audio tia Fourté IEMs are designed for unparalleled enjoyment, delivering exceptional detail and a supremely satisfying listening experience. While not a reference monitor, they offer excellent bass response and beautifully balanced, crystal-clear highs, drawing comparisons to the Focal Utopia for their detail and resolution. The innovative tia system, featuring tubeless drivers and a single-bore design, creates a smooth, musical frequency response with enhanced depth and soundstage. Apex technology eliminates pneumatic pressure for a comfortable, pressure-free fit, while True Phase restores proper phase response. The durable aluminum body ensures longevity and a premium feel.
$3599.00
Owner Satisfaction
4.7
/ 5
Category Rank
48
/ 6142
#48 in Headphones
Price vs Category Average
+512%
Above average
Driver Type/Count
31
/ precision BA drivers, dynamic driver
Who it's for
- Audiophiles seeking unparalleled clarity and expansive soundstage imaging
- Listeners prone to ear fatigue during long sessions
- Music lovers craving an immersive, concert-like listening experience
Who should skip it
- Budget-conscious buyers looking for entry-level audio gear
- Casual listeners wanting a simple plug-and-play setup
- Users with unique ear shapes requiring specific ergonomic designs
Performance breakdown
Soundstage Depth
The tubeless tia design creates a remarkably spacious, out-of-head listening experience.
High-Frequency Clarity
Crystal-clear highs deliver exceptional detail without ever sounding harsh or fatiguing.
Bass Response
Dynamic drivers provide a punchy, satisfying low end with impressive visceral impact.
Listening Comfort
Apex technology effectively eliminates pneumatic pressure for fatigue-free, long-term listening sessions.
Build Quality
The robust aluminum body offers a premium feel and long-term structural durability.
Phase Accuracy
True Phase technology ensures precise imaging and a coherent, natural musical presentation.
Key Specs
Driver Type/Count
3 precision BA drivers, 1 dynamic driver
Driver Configuration
1 tia high, 1 high-mid, 1 tia mid, 1 dynamic low
Frequency Response
5Hz – 22KHz
Sensitivity
114db @1kHZ @1mw
Impedance
10 Ω @ 1kHz
Crossover
Integrated 4-way passive crossover
Isolation
-20dB internal apex technology
Cup style
Closed-Back
Features
- tia System for smooth, musical frequency response and enhanced soundstage
- Apex technology for pressure relief and superior listening comfort
- Single-bore design to eliminate unwanted tube resonance
- True Phase technology for restored proper phase response
- 3D Sound for a spacious, out-of-head listening experience
- Durable aluminum body with a matte finish
What customers say
Customers consistently praise the 64 Audio tia Fourté In Ear Headphones for their extraordinary sound quality and innovative design. Reviewers frequently highlight the expansive, detailed, and natural audio reproduction, attributing it to the unique tia technology. Many find the sound experience immersive and highly resolving, setting a new benchmark for in ear monitors. The premium build and comfortable fit also contribute to a highly satisfying ownership experience, making these headphones a top choice for discerning audiophiles seeking ultimate sonic performance.
Know before you buy
The tia system removes the sound tubes typically found in IEMs, which eliminates unwanted resonance and internal reflections. This results in a more open, spacious soundstage and a smoother, more natural frequency response.
Yes, the integrated Apex technology vents pneumatic pressure from the ear canal, which significantly reduces listener fatigue. This allows for longer, more comfortable sessions without the 'stuffed-up' feeling common in many closed-back designs.
While they offer incredible detail and resolution, they are tuned for musical enjoyment rather than clinical neutrality. If you are looking for a strictly flat, reference-grade monitor, you may find the Fourté's engaging, colored sound profile better suited for personal listening.
With an impedance of 10 ohms and high sensitivity, they are relatively easy to drive. However, using a high-quality dedicated DAC or amplifier will help you get the most out of their resolution and phase accuracy.
The Fourté uses a dynamic driver for the low end and three balanced armature drivers for the mids and highs. This hybrid approach provides the punchy, visceral bass response of a dynamic driver while maintaining the speed and crystalline detail of balanced armatures.
Despite the pressure-relieving Apex technology, they still provide a solid -20dB of isolation. They are effective at blocking out ambient noise, making them suitable for commuting or office use.
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