64Audio U18t IEM
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64Audio U18t IEM

$2,999.00
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Redefining Reference with the 64Audio U18t IEM

The U18t is 64Audio's most capable universal IEM. 18 exceptionally-tuned drivers and 64Audio's Apex technology combine to give you the ultimate sound monitoring experience.

64audio u18t front angled view without cables

What's In The Box?

Everything you need is included with the 64Audio U18t IEMs!

  • U18t Universal In-Ear Monitors
  • 64 Audio Premium Leather Case
  • TrueFidelity Foam Ear Tips (S,M,L)
  • SpinFit Silicone Ear Tips (S,M,L)
  • Silicone Ear Tips (S,M,L)
  • 3.5mm Black Premium Cable
  • Apex Modules: m20, m15, mX
  • Cleaning Tool
  • Cable Clip
  • Round Sticker
64 audio u18t box and accessories laid out on white background

64Audio U18t In-Ear Monitor Technical Details

The U18t comes with revolutionary proprietary 64Audio technologies for enhanced comfort and sound.

  • Tubeless In-Ear Audio (tia)
  • Air Pressure Exchange (Apex)

The IEM to end the driver-count arms race - 64 Audio U18t

More drivers don't always mean better, yet the U18t begs to differ - packing a mind-blowing 18 Balanced Armature drivers per side!

The U18t is not only the most densely-packed in-ear monitor on the market, but it is also one of the most capable IEMs in terms of overall sonic performance. The detail and resolution are so good on the U18t, you'll be able to hear details in music like never before.

64 audio u18t front close up view

Turn heads in comfort and style - 64Audio U18t

The 64Audio U18t IEM's shells stand out with its stunning flame orange color scheme and gorgeous face plates. The best part? The U18t is lightweight and easy to wear - an impressive feat for an IEM packing 18 drivers per side!

Turn heads wherever you go and enjoy unmatched sound precision and clarity with the 64 Audio U18t.

64 audio u18t top view on wood table with accessories

Experience high-frequency clarity and detail with the 64Audio U18t

The U18t is one the first universal IEMs to feature 64Audio's tia high-frequency driver.

Configured in a single-bore design, the tia high driver delivers incredible high-frequency extension for an ultra-detailed yet smooth sound at the highest frequencies.

64 audio tia high balanced armatures

Listen to your music without any discomfort with the U18t Apex Technology

The U18t comes with the m20, m15, ad mX Apex Modules out of the box for unbeatable sound and comfort.

Swap in your preferred Apex Modules and enjoy enhanced sound, comfort, and noise isolation with the U18t.

64 audio u18t apex modules top and front view

Black Premium Cable comes standard with the 64Audio U18t

Included with your purchase is 64Audio's premium black cable - soft to the touch and capable of carrying every bit of information to your IEMs.

  • Black, 0.23 Ohms Total Impedance
  • 7 x 7 x 4 Multi-Twist, 26 AWG
  • Silver Plated OCC Copper Wire
  • Termination: 3.5mm
64 audio u18t black cable coiled on brown surface

64 Audio U18t Frequency Response

The U18t covers frequencies starting from 10hz and extending to 20kHz - allowing for a wide range of frequencies to be reproduced accurately.

64Audio U18t vs U12t

U18t:

18 Drivers

10hz – 20kHz Frequency Response

9Ω Impedance @1kHz

Integrated 4-way Passive Crossover

U12t:

12 Drivers

10hz – 20kHz Frequency Response

12.6 +1/-2 Ω Impedance from 10hz – 20kHz

Integrated 4-way Passive Crossover

Our Analysis:

  • The U18t delivers supreme detail, resolution, and accuracy for a truly reference-grade sound monitoring.
  • The U12t is meant as an all-rounder, focusing on flat sound signature and precision for reference-level IEM listening.

64Audio U18t vs U18s

U18t:

18 Drivers

10hz – 20kHz Frequency Response

9Ω Impedance @1kHz

Integrated 4-way Passive Crossover

U18s:

18 Drivers

10hz – 20kHz Frequency Response

8Ω Impedance @1kHz

Integrated 4-way Passive Crossover

Our Analysis:

  • The U18t is meant for producers or artists looking for the most accurate sound reproduction with the best detail and clarity.
  • The U18s is tuned darker and warmer than the U18t. U18s sounds more similar to the U12t vs the U18t in terms of overall sound signature. Best for relaxed yet detailed listening.

64 Audio U18t Price

The 64Audio U18t is 64Audio's flagship universal IEM. For the price of $2,999, the U18t offers an extremely detailed and accurate sound that's perfect for studio production work or on-stage monitoring.


64 Audio U18t Specs

Specification Description
Driver Configuration: 1 tia High Driver – 1 High-Mid Driver – 8 Mid Drivers – 8 Low Drivers
Frequency Response: 10hz – 20kHz
Sensitivity: 111 dB/mW Sensitivity @1kHz
Crossover: Integrated 4-way Passive Crossover
Impedance: 9Ω Impedance @1kHz
Apex Technology Isolation: -20dB, -15dB, -10dB

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Shipping is FREE on all orders to customers within the USA.

We don't want to mess around with fine print and extra charges. We like things to be simple and easy. 

Here's how shipping works around here:

  1. Place your order
  2. You'll receive a confirmation e-mail. This means we've received your order and have pre-authorized your payment method.
  3. We check the stock levels on your product.
    • If it's available, we'll get it shipped within 3 business days.
    • If it's not available, we'll reach out by email and make alternate arrangements.
    • If you placed a pre-order, we'll keep you updated by email on the status of your order.
  4. You'll receive another email with shipping/tracking information.

Learn More

We get it. Audio gear can be subjective. That's why we offer our industry-leading 365 day return policy. Here's a quick rundown;

  • 365 Day Returns, for ANY reason.
  • ZERO Return Shipping Cost
  • You will receive your hard-earned money back in your pocket, NOT store credit.

Learn More

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at HiFiSoundGear.

  • 365 Day Returns. Not happy with your product? We'll buy it back.
  • Free Shipping in the USA. No extra charges. Ever.
  • Price Match Guarantee. We'll beat another authorized dealer by 5% for the best prices online, guaranteed.
  • Zero Shenanigans. If we can't help you, we won't pretend like we can.
  • Old-School Service. We pride ourselves on the best service, anywhere.
  • Your Satisfaction Guaranteed. We handpick our products for quality, and we know you'll love them. But if there is ever something wrong, we'll fix it.
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