THIEAUDIO Monarch MKIV IEM - Experience Musical Energy and Finesse
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THIEAUDIO Monarch MKIV IEM

$1,149.00

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THIEAUDIO Monarch MKIV IEM - Flagship Sound Meets Brain-Shattering Bass Power

The THIEAUDIO Monarch MKIV is the latest evolution of THIEAUDIO's legendary Monarch IEMs, boasting the same class-leading sound with next-generation features to make every listening session unlike any other.

Featuring a 10-driver tribrid design for studio-like sound, a toolless Tuning Switch for on-the-fly sound customization, IMPACT2 for enhanced bass, T6 Aircraft Grade Aluminum construction for a lightweight and robust feel, and a brand new Chocolate Modular Cable for seamless connections to any source.

The Monarch MKIV redefines what's possible with an in-ear monitor, ushering in a new era of sound you've never experienced before.

thieaudio monarch mkiv iem front view

What's In The Box?

Everything you need is included with the THIEAUDIO Monarch MKIV IEMs!

  • THIEAUDIO Monarch MKIV In-Ear Monitors
  • New THIEAUDIO Upgrade Cable
  • 3 Sets of THIEAUDIO Ear Tips (S/M/L)
  • Cable Tie
  • Cleaning Cloth
  • User Manual & After-Sales Service Card
  • Thank You Card
  • THIEAUDIO Monarch MKIV Stickers ×2
thieaudio monarch mkiv iem box and accessories

10-driver Tribrid for an engaging, studio-like sound

The THIEAUDIO Monarch MKIV boasts a whopping 10 drivers per side, for music that sounds life-like and immersive - no matter the genre.

Dual Dynamic Drivers in Isobaric design deliver brain-shaking bass and deep, textured rumbles, while the six BA drivers reproduce vocals and instruments with outstanding clarity and tone. The two Electrostatic Drivers boast even greater treble extension compared to previous generations while sounding smoother and more natural.

The result? An immersive soundstage with eye-opening clarity and detail without harshness.

thieaudio monarch mkiv iem side by side

Toolless Tuning Switch, so you can enjoy music with clarity and power

The Monarch MKIV features a toolless Tuning Switch that lets you jump between Standard and Rumble Modes.

Standard Mode brings you back to the Monarch line's roots, delivering studio-quality clarity and tone, along with the rumble and slam you've come to know and love from the Monarch series.

Rumble Mode takes impact and excitement all the way to 11. The already impressive 10dB of bass from Standard Mode is boosted to 13dB for a more visceral thump and low-end rumble. Rumble Mode gives vocals, bass guitars, and other instruments more body. Music sounds weightier and impactful, so you can enjoy a more engaging listening experience.

thieaudio monarch mkiv iem front and side view

IMPACT2 Technology, for bass you can hear and feel

Monarch MKIV combines two latest generation IMPACT2 Technology of the 8mm composite diaphragm drivers arranged in an isobaric design, so you can enjoy a true subwoofer experience in an IEM. The result is a more powerful and impactful bass, without loss in detail or accuracy.

thieaudio monarch mkiv iem frequency response graph

T6 Aircraft Grade Aluminum Construction, for a durable yet lightweight feel

For the first time, the Monarch MKIV features a sleeker and more robust shell design.

Built using T6 Aircraft Grade Aluminum, the Monarch MKIV IEM boasts a more durable and lightweight feel while retaining the eye-catching aesthetics the Monarch line is known for.

Surface hardening also ensures scratch resistance and enhanced durability against sweat, so you can jam to your tunes in comfort and style. 

thieaudio monarch mkiv iem front view on black fabric

Next-Generation Chocolate Cable, for seamless and consistent connections to any audio device

The Monarch MKIV comes with THIEAUDIO's latest modular cable - the Chocolate.

The premium Chocolate cable boasts 8 strands of ultra-pure oxygen-free copper (OFC) wires paired with silver-plated OFC wires for a full-bodied sound. The modular plugs mean connections to 4.4mm Balanced and 3.5mm Unbalanced connections are a breeze. 

thieaudio monarch mkiv iem chocolate modular cable

Monarch MKIV Specs

Specification Description
Driver Configuration: 2DD (8mm) + 6BA + 2EST (Sonion E50) + 1 Sonion 28UAP
Frequency Response: 10Hz – 44kHz
Impedance: 10/9 ohms (±1 ohm) @1kHz
Crossover: 4-way crossover with 4 sound tubes+2 ultra-high frequency drivers+4 high frequency drivers+2 mid frequency drivers+2 low frequency drivers
Total Harmonic Distortion (THD) <1% @1kHz
Sensitivity 100dB ±1dB @1kHz

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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. Find a better price? We'll match it.
  • 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.
  • No Taxes (Except in CO) We're small enough that we don't need to charge taxes on your orders in any state but Colorado.

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