Completely Redesigned for Next-Level Performance: The HYPE 4 MKII is a full ground-up redesign, combining advanced engineering and precision tuning to deliver superior tonal accuracy, clarity, and immersive soundstage compared to its predecessor.

Gen 2 IMPACT2 Dual Dynamic Subwoofer System: Equipped with two 8mm composite diaphragm dynamic drivers in THIEAUDIO’s proprietary acoustic chamber, it produces deep, controlled sub-bass while maintaining clean mids and crisp highs for a balanced listening experience.

Upgraded Knowles Balanced Armature Driver Array: The HYPE 4 MKII features imported Knowles balanced armature drivers for uncompromising tonal and technical performance. Dual RAB drivers deliver rich low-mids, an ED-33465 driver adds mid-treble clarity, and a RAD-33518 ultra-tweeter extends airy, detailed highs rivaling electrostatic designs.

Precision Tuning and Handcrafted Engineering Excellence: With a 4-way crossover, 4-tube system, and CNC-machined aluminum housing, each unit is hand-assembled and individually quality-checked, ensuring durability, premium finish, and studio-level sound performance.

Completely Redesigned for Performance

The HYPE 4 MKII is not just a retuning - it’s a complete redesign from the ground up. Featuring brand new balanced armature drivers from Knowles, second generation IMPACT2 sub-woofer system, and a new engineering approach, the HYPE 4 MKII makes leaps in both tonal and technical performance.

Gen 2 IMPACT2

The HYPE 4 MKII incorporated the latest generation of the IMPACT2 sub-woofer system, which is shared with the Monarch MKIV. Two 8mm composite diaphragm dynamic drivers encased in THIEAUDIO’s proprietary pneumatic acoustic chamber pumps out tight, focused, and deep sub-bass thumps - all while keeping the rest of the frequency range clean and neutral. 

Knowles Balanced Armature Drivers

The MKII design was developed from the ground up. Using imported American Knowles balanced armature drivers, the HYPE 4 MKII makes no compromises when it comes to tonal and technical excellence. Two of the latest Knowles RAB series drivers focus on rich and pronounced low-mids, while separate ED-33465 driver layers up on mid-treble frequencies. This crossover strategy significantly enhances imaging capabilities as well as tonal depth in the midrange. A single Knowless RAD-33518 ultra-tweeter has been strategically positioned within the nozzle for an upper treble extension that rivals electroststic and planar drivers. 

Enhanced Tuning Approach

The key to THIEAUDIO’s global success has been its attention to tonal balance. We took a step back to assess what characterizes the intersection between studio neutral and musical enjoyment, and have incorporated our new tuning approach into the HYPE 4 MKII. The sub-woofer output is thunderous, with a 9dB output, but with a sharp cutoff at 150Hz, the bass is precise and free from bloating. The midrange features a lush 400Hz hump, while being neutral between the bass and treble cutoffs. This allows the midrange to be naturally warm, without being muddy, while remaining true to a studio monitor presentation. The treble is painstakingly tuned to feature a delayed decay, which allows excellent detail retrieval and upper headroom in the soundstage, while being free of harshness. 

Excellence in Engineering

The HYPE 4 MKII is acoustically engineered with a 4-way crossover and 4-tube system featuring 7 separate passive components. Physically, the MKII is constructed from CNC-processed solid aluminum blocks, which are then finished by hand prior to being anodized for a professional look and durability. Each HYPE 4 MKII unit is hand assembled and undergo independent rounds of quality inspections at each manufacturing phase, including individual driver pairing, driver assembly, shell processing, final assembly, and packaging. 

Premium Modular Cable

The HYPE 4 MKII features our new performance cable, made with high-purity copper. With a thick 2-core design, the cable feels as premium as it sounds, delivering a clean and natural signal. With a modular plug system, you can easily switch between 4.4mm balanced and 3.5mm unbalanced plugs for compatibility with a wide range of devices.

Technical Details

Impedance

18Ω (±1Ω)

Sensitivity

101dB (±1dB) @ 1kHz

Frequency Response

5Hz–22kHz

Crossover

4-Way

Driver Configuration

1× Knowles RAD-33518, 1× Knowles ED-33465, 2× Knowles RAB, 2× 8mm Dynamic Drivers

Inside the Box
  • 1x Pair of THIEAUDIO HYPE 4 MKII In-Ear Monitors
  • 1x Detachable Premium Cable
  • 1x Carrying Case
  • 1x Set of Eartips (multiple sizes) in small case
  • 1x 3.5mm Adapter
  • 1x 4.4mm Adapter
  • 1x Warranty Card / Thank You Note
  • 1x Wearing Diagram / User Guide
PRICE
$399.00 USD

30-Day Return Policy

You may return any non-customized product that is still factory sealed, within 30 days upon receiving it. For items that are damaged, incorrect, or faulty upon delivery, Linsoul will assess the issue and provide a solution accordingly.

1 Year Warranty

The THIEAUDIO Hype 4 MKII Comes with a 1 year warranty on In-Ear Monitors and 3 month warranty on the cable.

Processing Time

This product is currently in its pre‑order period. Pre‑orders apply to items not yet in stock, and shipping will begin once they arrive. Processing times are estimates only.

Pre-order Period:

  • 2-4 weeks processing time

Note:

  • No cancellation of orders once ordered.
  • All orders to be shipped out sequentially.

Authentic Products

Linsoul Audio is the authorized distributor. All products are authentic and genuine.

Worldwide Free Shipping

We are located in China but send our products worldwide for free. T&Cs apply.

1 Year Warranty

We provide 1 year warranty for the all products except the cables and accessories*.

Online Support

Need help?, we are here to assist youMonday - Friday: 09:00 – 18:00 (UTC+8)

Customers praised these IEMs as "one of the most complete" in their price range, highlighting exceptional "powerful and well-controlled sub-bass" and "crisp, detailed treble." The balanced sound signature combines "natural midrange" with "deep bass" without overwhelming. Excellent build quality and comfort for long sessions.

  • 5 stars: 11 (92%)
  • 4 stars: 1 (8%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
ADR (Izmir, TR)
Hype 4 MKII - Electro Audio World's Take

The THIEAUDIO HYPE 4 MKII is one of the most complete IEMs I have heard in this price range.
Its biggest achievement is not simply the powerful IMPACT-2 bass or the impressive Knowles treble section. It is the way everything fits together. The deep sub bass does not overwhelm the midrange, the midrange remains natural without becoming overly lush, and the treble provides genuine detail and air without turning the entire presentation into a brightness exercise.
It is also remarkably versatile. The FiiO M27 exposes its technical ability, the M33 R2R brings out its musical side, and the Sony NW ZX507 makes it a very enjoyable portable companion.
After comparing it directly with the four IEMs in my collection, I consider the HYPE 4 MKII one of the strongest all round choices in its class. It may not be the absolute specialist in every individual category, but its combination of bass quality, tonal balance, technical performance and source scalability is extremely difficult to beat. You can read my full Hype 4 MKII review here >> https://www.head-fi.org/showcase/thieaudio-hype-4-mkii-universal-iem.28736/reviews#review-44380

P
Pierre-Alexandre P.
Awesome value for U shape !

Very great design
Very great package, premium and solid!
Sound is very beautiful, versatile, I shaped, detailed but no harsh and stay very natural. Addicted on every genre, bass is superb on phonk !

My french review in video

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D
David A.V.E. (Monterrey, MX)
super clear

excellent quality, good for playing live (drums) and good as a mixing device: https://youtu.be/ypffkeW4bxk?si=SI1EBR_hSF2up6Es

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A
Alexandros A. (Athens, GR)
Incredible value under the 500$ price bracket !

Powerful and well-controlled sub-bass response that adds depth and authority without bleeding into the midrange
Overall tuning is balanced and mature, combining musical enjoyment with strong technical performance
The midrange is natural, coherent and fatigue-free, allowing vocals and instruments to sound realistic and well-positioned
The treble is extended, airy and detailed, yet remains smooth and non-fatiguing even during long listening sessions
Good soundstage width, accurate imaging and solid layering capabilities
Build quality is excellent, featuring CNC-machined aluminum shells and beautiful iridescent faceplates (ranging between purple, green, cyan and ultramarine hues) that enhance the premium feel
The included modular cable system and rich accessory package further elevate the overall value of this set.

M
Maurizio (Florence, IT)
Precise, Transparent and Revealing

I bought the Thieaudio Hype 4 MKII a few weeks ago and honestly I didn’t expect them to be this good. The first thing that surprised me was the clarity, you can hear a lot of small details in the music that I never noticed before.

The bass goes deep but it never feels messy or overpowering. It has good punch but stays controlled. The treble is very open and airy, which makes the music feel bigger and more spacious.

Comfort is also very good. I can listen for hours without any problem and the build quality feels really solid.

Overall I’m really happy with this purchase. If you like detailed sound with good bass and clear highs, these are definitely worth it.

H
Humberto

Gran calidad, sonido calido, con grave un poco por arriba de lo neutro, muy buenos medios , agudos un poco resagados pero presentes, por lo que para nada con molestos, quien guste sonido calido , este es un gran iem, soundstage promedio pero muy buena imagen. La construccion es de metal y el cable que trae es muy bueno, me hubiera gustado un set mas de eartips por el precio, pero estan bien las que traen.

G
GIUSEPPE T. (San Benedetto del Tronto, IT)
Absolute Upgrade, my new favorite IEMs!

The ThieAudio Hype 4 MKII are nothing short of incredible. Coming from the FiiO FH9, which I absolutely adored, these are a clear step forward in overall sound quality.
The sound signature is exceptionally well-balanced and engaging. The bass is powerful, textured, and deeply satisfying without overwhelming the rest of the frequency spectrum. The midrange is clean and natural, making vocals sound rich and present, while the treble is crisp, detailed, and extended without ever feeling harsh or fatiguing.
They have officially taken the crown as my absolute favorite earphones. Given the top-tier acoustic performance and build quality they deliver, the price-to-performance ratio is outstanding. I highly recommend them to anyone looking for a serious audio upgrade!

R
Rico M. (Vancouver, CA)

THIEAUDIO Hype 4 MKII

F
Fabián P. (Bogotá, CO)

THIEAUDIO Hype 4 MKII

L
Lázaro (Buenos Aires, AR)

THIEAUDIO Hype 4 MKII

S
Sean

Great sound quality and adequate bass for me

M
Matti T. (Joensuu, FI)
Best pair I own

I really love these ones, they feel super premium for the price

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