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New at Audio4664 Audio U12t (2025 Revision) Universal In-Ear Monitor
WIRED in-ear HEADPHONE
2-pin connection
studio/professional
✓ In stock and ready to ship immediately
✓ FREE 2 Business Day Shipping (want free overnight?)
✓ Ships TODAY if you order in the next 11 hr 58 min, with estimated delivery as fast as Tue, May 27 to Columbus, OH
✓ 1 year limited 64 Audio warranty
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Product Details
Audio46's Opinion
The 2025 revision maintains the core elements that made the original a favorite, while refining the design and optimizing performance to an even higher standard. The U12t delivers an incredibly spacious and three-dimensional soundstage, rivaling even some open-back headphones. The bass response is precise rather than overpowering. While not the most visceral, the sub-bass reaches deep with a clean, textured presentation. Vocals are rendered with lifelike accuracy, neither recessed nor artificially forward. Instruments are full-bodied, with a natural timbre that enhances realism. What sets the U12t apart in the treble range is its ability to reproduce high frequencies without introducing artificial brightness.
Our Full Review
↓ Details provided by 64 Audio ↓
(Specifications and appearance of this product are subject to change without notice)
U12t 2025 Revision
New Look. Same Legendary Sound.
- Raised Metal Logos
- New Shell Color & Texture
- Chamfered Faceplate Bezel
- U12t silver color electroformed stainless steel faceplate chip
- Now comes with all current apex modules and two cables terminated in 3.5mm & 4.4mm. U12t is the first UIEM that will come standard with our Pearl Premium Cable
- Along with the cosmetic changes, U12t is now packaged in a newly designed unboxing experience seen launched with Solo
U12t does it all, delivering immersive sound and impeccable spatial imaging. Its articulate highs extend beautifully with a warm and engaging low-end response - just like its custom counterpart, the A12t.
Offering reference-level detail, this IEM has become one of the most highly regarded and sought after audiophile UIEMs. Each ergonomic shell is machined out of a solid piece of aluminum and finished with an elegant brushed aluminum faceplate.
U12t is the first UIEM that will come standard with our Pearl Premium Cable including both 3.5mm single-ended and one balanced 4.4mm.
Patented Technology
tia
Tubeless In-Ear Audio (tia) is a patented IEM design methodology that aims to reduce unwanted resonance and distortion for a transparent and lifelike sound signature. The tia system is comprised of three major elements: open balanced armature tia drivers, the tia single-bore design, and tia acoustic chambers. U12t features two major elements of the tia system: the tia driver and the tia single-bore design.
Apex
Air Pressure Exchange (Apex) is a patented vent that releases air pressure in a sealed ear canal all while retaining standard IEM levels of isolation; enabling musicians and music enthusiasts to listen more comfortably for longer. This venting alleviates listener fatigue and allows for a much more realistic soundstage. Apex comes in three module variations for U12t: mX, m15 and m20.
LID
Linear Impedance Design (LID) is a patented circuit that corrects the non-linear electrical resistance of the multiple driver-sets comprising this 12 driver IEM. Varying source amplifier output impedance in devices like smartphones, body packs, DAC/amps, and DAPs typically results in varying frequency response across them, depending on the increase in resistance. Restoring proper interaction with the source and preserving the desired sound signature enables a consistent reliable sound.
Specifications
Color
Silver
Material
T6061 Aluminum Shell
Electroformed Stainless Steel Faceplate Chip
Driver Configuration
1 tia High Driver
1 High-Mid Driver
6 Mid Drivers
4 Low Drivers
Frequency Response
10 Hz - 20 kHz
0.78mm 2-Pin Cables
Silver Plated OCC Copper
7 x 7 x 4 Multi-Twist
0.23Ω - 26 AWG - SPC
Sensitivity
108 dB/mW @ 1 kHz
Impedance
12.6 Ω
Apex Isolation
-10db to -20db
Designed, Assembled, and QC’d by highly skilled technicians in the United States using components sourced both domestically and globally from trusted suppliers.
Included
- 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)
