64 Audio U12t 12 Driver Reference In Ear Monitor (2025 Edition)

64 Audio
Key Features:
  • Reference level 12-driver audio
  • Ergonomic, durable shell
  • Apex pressure relief system
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Details

The legendary U12t has been refreshed for 2025 with a new cosmetic design and upgraded accessory package. The U12t's industrial design has been updated with beautiful silver earpieces and an electroformed stainless steel faceplate chip with chamfered bezels. The U12t package now includes 3.5mm and 4.4mm silver cables, and all Apex modules offered to date: MX, M12, M15 and M20.

U12t delivers stellar performance with 12 drivers per side, with 4 drivers focusing on the bass frequencies, 6 drivers focusing on the midrange, 1 driver focusing on the mid-high frequencies and 1 Tia driver focusing on the highs. The 12 drivers are secured in an ergonomic aluminium shell. The inlaid brushed faceplate finishes off the design with flair. The U12 also features Apex technology, which relieves air pressure created by speakers in an enclosed environment. The U12 comes bundled with a pair of 48 inch, 2-pin detachable cables terminating with 3.5mm and 4.4mm plugs, protective case, a extensive set of silicone tip and foam eartips, a set of Apex mX/M12/M15/M20 modules to tune the sound, shirt clip, and cleaning tool.

The U12t offers a linear sound with a mild emphasis on bass and treble to provide a clear reference sound. The earphones are detailed and exhibit crisp highs, yet emphasize powerful bass and smooth, intimate vocal presence. The emphasis on the upper vocal air and bass gives the sound of U12t a clear, technical and punchy sound.

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What's in the box

  • U12t Universal In-Ear Monitors
  • Carry Case
  • TrueFidelity Foam Ear Tips (S,M,L)
  • SpinFit Silicone Ear Tips (S,M,L)
  • Silicone Ear Tips (S,M,L)
  • 3.5 mm Silver Premium Cable
  • 4.4 mm Silver Cable
  • Shirt Clip
  • Cleaning Tool
  • Cleaning Cloth
  • Round Sticker
  • Apex Modules (m20, m15, m12, mX)

Specifications

Driver Type/Count 1 tia High Driver – 1 High-Mid Driver – 6 Mid Drivers – 4 Low Drivers
Frequency Response 10Hz – 20kHz
Sensitivity 108 dB/mW @ 1kHz
Impedance 12.6 +1/-2 Ω from 10Hz – 20kHz
Crossover Integrated 4-way Passive Crossover
Isolation Apex Technology Isolation: -20dB, -15dB, -10dB

Audio Performance

Drivers 12 Drivers
Sound Signature
Clear, punchy and resolving reference sound
Accuracy

Low

Low Mid

Mid High

High

Resolution
Resolution (9)

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64 AUDIO


With nearly two decades experience as a sound engineer, Vitaliy Belonozhko founded 64 Audio when he discovered the advantages of IEMs over traditional floor wedges. With unique technologies such as the Tia tubeless driver design and the Apex pressure relief system, 64 Audio consistently aims for high performance, balanced sound with practical, ergonomic fit.

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64 Audio

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