THIEAUDIO Valhalla
19 Driver Flagship In-Ear Monitor
- Recommended for Audiophiles
- Recommended for Professionals
ForCritical listening/Studio monitoring/Gaming
- Processing time: 3-4 weeks, subjected to manufacturer's updates
- 4-6 weeks for UIEM with custom design, no cancellation of UIEM (custom design) orders once ordered
- Images are for reference only. Actual product and packaging may differ from the images. Final product is based on what is actually received.
Shipping time estimate. Pre-order items are non-cancellable and non-refundable.
Pre-order detailsRecommended products
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Optional pairings. A cable and ear tips are already in the box.
Overview
The details behind THIEAUDIO Valhalla.
Flagship IEM with 19 Drivers and Precision Bass System
The THIEAUDIO Valhalla sets a new standard with its 19-driver configuration per side, featuring four Sonion subwoofers, ten low-midrange drivers, four Knowles mid-treble drivers, and one ultra-treble tweeter. With a 4-way crossover and multi-tubing system, it delivers a 10dB bass shelf with sharp decay at 200Hz, warm midrange, and extended treble up to 40kHz. Powered by the Precision Bass System, the Valhalla ensures subwoofer-level impact with reduced ear fatigue, offering unmatched clarity and tonal balance for professionals and enthusiasts.
Highlights
Pinnacle of THIEAUDIO’s Acoustic Mastery
The THIEAUDIO Valhalla represents over two years of research and development, drawing on the expertise of engineers from multiple countries. Designed with three key goals in mind—pushing driver capacity limits in IEMs, achieving unparalleled technical performance, and showcasing tonal superiority—the Valhalla stands as the culmination of THIEAUDIO's technological and artistic breakthroughs over the past five years.
Cutting-Edge 19-Driver Design
The Valhalla features an impressive array of 19 drivers per side, demonstrating the highest resolution among THIEAUDIO products. This includes four Sonion 38D1XJ007 subwoofers, ten Sonion E50DA low-midrange drivers, four Knowles RDE 33729 mid-treble drivers, and one Knowles WBFK 30095 ultra-treble tweeter. This intricate combination of premium drivers ensures exceptional technical precision and remarkable sound quality.
Precision Bass System (PBS)
THIEAUDIO's proprietary PBS is engineered to emulate a true subwoofer experience in an IEM. This innovative system features a meticulously designed resonance chamber and low-frequency filter cavity, achieving a precise 200Hz bass shelf and extending bass impact down to ultra-low frequencies of 5Hz to 20Hz. The PBS not only enhances bass depth and clarity but also minimizes ear fatigue through a pressure relief valve, ensuring both acoustic excellence and user comfort.
Tonal Precision and Superior Tuning
The Valhalla employs advanced 4-way passive crossovers and a multi-tubing acoustic network to achieve THIEAUDIO’s signature tuning. Its balanced sound profile includes a 10dB bass shelf with quick decay and a sharp cutoff at 200Hz, delivering powerful bass impact without muddying the low-mids. The midrange features a gentle 1dB decay slope from 200Hz to 800Hz, providing a perfect blend of neutrality and warmth. The treble is precisely tuned with an 8dB pinna curvature at 2.8kHz, aligning with human auditory perception and extending ultra-treble performance up to 40kHz.
At THIEAUDIO, we combine innovative technology with thoughtful acoustic design to create In-Ear Monitors that bring your music to life.
Focused on delivering clarity and detail, we design our products with both music enthusiasts and professionals in mind. Each unit is carefully crafted to ensure reliable performance and a natural listening experience. At THIEAUDIO, we’re here to help you enjoy your music the way it was meant to be heard.
Pinnacle of THIEAUDIO’s Achievements
The R&D behind the THIEAUDIO Valhalla took over two years, with input from engineers from multiple countries contributing to its development. The Valhalla was designed with three core goals: (1) Push the limits of driver capacity in an IEM format; (2) Achieve the highest degree of technical performance; (3) Establish THIEAUDIO’s tonal superiority. With five years of continuous technological and artistic development, the Valhalla reflects THIEAUDIO's pursuit of excellence in the global IEM market.
Pushing the Limits: 19 Drivers Per Side
With 19 drivers per side, the Valhalla achieves exceptional resolution while maintaining a comfortable in-ear design. By utilizing a greater number of drivers, it reduces the workload on each unit, resulting in unparalleled clarity and technical performance. This engineering feat allows the Valhalla to stand as THIEAUDIO’s most detailed and refined product to date.
A closer look at THIEAUDIO Valhalla.
The details, in full view.
Genuine Imported Drivers
The Valhalla is equipped with carefully selected components sourced from industry leaders Knowles and Sonion. Each earbud features four Sonion 38D1XJ007 sub-woofers, ten Sonion E50DA low-midrange drivers, four Knowles RDE 33729 mid-treble drivers, and one Knowles WBFK 30095 ultra-treble tweeter. These imported drivers ensure precise, high-fidelity audio reproduction, meeting the standards of professional and enthusiast users alike.
PBS: Precision Bass System
PBS (Precision Bass System) is THIEAUDIO’s innovative solution for delivering a true subwoofer-like experience in an IEM. Developed over the course of a year, PBS integrates multiple low-frequency drivers within a specially designed resonance chamber. This chamber is optimized to achieve a 200Hz bass shelf with enhanced depth and clarity, while the addition of a diversion tube and pressure relief vent precisely targets ultra-low frequencies from 5Hz to 20Hz. The design not only enhances sub-bass extension and impact but also reduces ear fatigue by relieving built-up pressure in the ear canal. By combining acoustic precision with ergonomic design, PBS delivers an immersive and comfortable listening experience.
A Feat of Acoustic Engineering
As THIEAUDIO’s flagship IEM, the Valhalla incorporates advanced crossover and tubing technologies. Its 4-way passive crossover network, combined with a 4-bore acoustic tubing system, ensures precise frequency division and smooth transitions across the entire spectrum. Unlike typical 1st-order crossovers, the Valhalla utilizes multiple 2nd-order networks for pinpoint accuracy. Additionally, impedance neutralization strategies ensure consistent performance regardless of the audio source. This sophisticated engineering results in an unmatched level of clarity and balance.
Tonal Superiority
The Valhalla embodies THIEAUDIO’s renowned signature tuning. The bass is characterized by a subwoofer-like impact, featuring a 10dB bass shelf that quickly decays and cuts off at 200Hz, avoiding any bleed into the mids. The midrange is tuned with a gentle 1dB slope from 200Hz to 800Hz, balancing neutrality with a touch of warmth. The treble features a smooth 8dB pinna gain at 2.8kHz, with extended ultra-treble output reaching up to 40kHz, offering brilliance and clarity without harshness. This tonal balance makes the Valhalla suitable for both professional and casual listening.
Grade 5 Titanium Housing
The Valhalla features Grade 5 Titanium, renowned for its exceptional strength and widely used in aerospace applications. This premium titanium housing offers an ultra-lightweight wearing experience while ensuring superior durability and strength compared to typical resin, plastic, or metal IEMs. Each shell is precision-crafted using advanced CNC technology. The newly designed ergonomic shape combines lightweight comfort with enhanced durability, making the Valhalla as premium in build quality as it is in sonic performance.
A Promise to Quality
The Valhalla reflects THIEAUDIO’s commitment to craftsmanship and quality. Each unit is handcrafted by a single engineer, requiring an entire day to complete. Drivers are meticulously measured and hand-paired before assembly, and each completed unit undergoes three stages of inspection: post-assembly testing, cosmetic checks, and accessory verification.
EliteNoir Cable V2 (Updated)
The Valhalla is paired with the updated THIEAUDIO EliteNoir Cable V2, featuring silver-plated copper conductors with aluminum hardware, wrapped in durable black PVC. Utilizing spiral shielding and Litz Type II wiring, the cable minimizes signal loss while enhancing long-term durability. Designed to preserve a neutral, uncolored sound signature, the EliteNoir Cable V2 enhances soundstage openness, refines detail retrieval, and delivers clean, controlled performance—allowing the Valhalla to perform at its full potential.
Sound profile
A closer look at the balance between bass, mids and treble.
- Balanced
- Tuning Meta
Technical details
- Driver configuration
- Multi-driver / single technology
- Driver technology
- Balanced Armature
- Included plugs
- Interchangeable plugs
- Fit size
- Large
- Tuning profile
- Meta
- Sound color
- Balanced, Bassy
- Suggested genres
- Vocal-focused music, Pop, Classical & Orchestral, Hip-Hop & Rap
- Driver
- 4 Sonion 38D1XJ Sub-woofers + 10 Sonion E50DA Dual Mid BAs + 4 Knowles RDE-33729 High BAs + 1 Knowles WBFK-30095 Ultra-high BA
- Sensitivity
- 103dB @ 1kHz
- Impedance
- 9Ω @ 1kHz
- Frequency Response
- 10Hz – 44kHz
- Crossover
- 4-Way Passive
- Tubing
- 4-Bore Acoustic
- Cable
- THIEAUDIO EliteNoir (3.5mm SE & 4.4mm BAL)
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Expert reviews
Watch the review. Read the full story.
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Video review: THIEAUDIO Valhalla
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Video review: THIEAUDIO Valhalla
Customer reviews
What listeners say about sound, fit and everyday use.
Customers praised this flagship IEM for its excellent sound quality, featuring "thumping but clean bass" and bright mids/highs. The all-BA design delivers impressive tonality, resolution, and a three-dimensional soundstage. While build quality is excellent with beautiful titanium shells, packaging is disappointing for the price point.
The first "flagship" IEM to really impress me in a long time. I'm a sucker for all-BA designs, and Valhalla is a good example why. Excellent tonality, precise technicalities, but also a kind of soft cohesiveness to the sound. It is a big shell -- at about the limits of my ear, thankfully smaller than some other ThieAudio earphones, and the titanium shell is gorgeous. I think their custom faceplates look next-level hot.
Unboxing & Build
Unboxing & Accessories: disappointing. It’s hard to believe a $2,000 IEM ships with these accessories. The case feels cheap—almost like cardboard—and doesn’t inspire confidence in durability. It’s a separate lid cylindrical case that isn’t convenient in use and is far inferior to the zippered soft case that comes with Monarch MKII.
Ear tips and other accessories arrive simply bagged in plastic with no left/right pairing labels. You get three pairs of white medium-firm silicone tips (S/M/L) and three pairs of black foams; a cleaning cloth; and interchangeable plugs for the stock cable.
I strongly suggest Thieaudio improve the accessory pack: include a small tip organizer with paired tips, a larger and sturdier carry case (the previous one was fine), and a fabric divider pouch like Softears or NiceHCK uses to keep the earpieces from scratching each other.
Build quality is excellent. I chose the default faceplate: its reflective pattern shimmers under light yet reads mostly black when worn—nicely understated. The titanium shells are smoothly machined with a fine matte finish, and laser-engraved model name, serial, and L/R marks. If I nitpick: there’s a tiny step at the seam between faceplate and shell—but that’s hair-splitting.
Fit & Comfort
The shells are on the larger side—not the very largest, but clearly bigger than most sub-$500 IEMs. They’re slightly smaller than Monarch MKII and smaller than some other flagships I’ve tried. You may need an adjustment period; after about a week they felt comfortable to me.
Titanium shells in winter can be unpleasantly cold—don’t let them get too chilly before inserting.
The nozzle is large (my measurement ~6.35 mm). Venting is not very generous, so insertion can produce a pressure piston effect and even discomfort. I recommend using smaller tips, insert slowly, and after seating the IEM gently pull up your ear/earlobe to equalize pressure in the canal.
Subjective Sound Impressions
The first thing that grabs me is the orderly, three-dimensional, oval soundstage. It’s not only wide on the horizontal plane but also has height layering—lows/mids/highs seem tiered from top to bottom—with vocals slightly forward. Density is high across the bands; treble is comparatively a touch thinner, which helps create excellent envelopment.
Resolution & imaging are strong on top of that tidy stage. You don’t have to strain to pick up small production or performance nuances—they’re just there. With large-scale, dynamic, and busy arrangements, Valhalla conveys a lot of information. Sometimes it overwhelms me enough to stop analytical listening and just ride the waves.
Tonality sits around a moderate V-Shape. Bass has solid quantity and good extension, with some sub-bass rumble. If someone claimed it used a dynamic driver for the lows, some listeners might believe it—but compared to real DD bass it’s faster, with shorter decay and less billow/relaxation.
Mids: instruments and vocal fundamentals are firm and clear, timbre smooth. Honestly, during large-scale high-dynamic passages I sometimes don’t have time to savor midrange texture, so presence can feel a bit de-emphasized.
Treble holds its balance even against the robust low end. Tonally it’s glossy/ornate yet can be slightly incisive; some sibilance can appear with certain vocals. Air in the very top end is well preserved, keeping the overall presentation open and transparent.
Drive & Pairings
This IEM doesn’t need a lot of power; it needs fine control. If your source has hiss, Valhalla will shout it back at you. On many high-power flagship DAPs I heard bass bloat, upsetting the balance.
Summary & Thoughts
I won’t get into one-to-one shootouts with other flagships, but Valhalla delivers genuine flagship-level density and technical performance. The density, in particular, has become my personal dividing line between “mainstream wide-stage IEMs” and “true flagships” as I re-enter the IEM world. In China’s preference context, the three-band balance might be labeled basshead-leaning; globally I’d still call it relatively balanced. Thieaudio uses legit, transparently specified drivers (they even list model numbers), durable construction, and—contentious feel aside—the best-sounding stock cable I had on hand, to produce a very easy-to-drive flagship.
Yes, it costs $2,000—but it also means you can plug it into almost anything you already own and get near-ideal performance. In a portable-audio market full of “endless-pit” products that only shine after you buy sources and cables far pricier than the IEM itself, Valhalla stands out as friendly to your wallet. I feel lucky that, coming back to flagships after years away, I found something that doesn’t punish the poor, yet still justifies a small splurge.
(But the packaging/accessories are truly weak. Spend $10 to fix that, Thieaudio!)
Valhalla is definitely an evolution of Monarch MK2 with more V-shape and enhanced bass in both quantity and quality.
Every note, from beginning to end, is meticulously handled, with some even emitting a hum and rumble at very low volume before fading, a sensation I haven't experienced with other earphones.
Theiaudio returns the King among my limited collections.
Valhalla > 622B > > Grand Maestro > Prestige LTD
I’m not into the technicalities but i know what i like. It’s thumping but clean bass which doesn’t overshadow a bright and colourful mid/top range. A very satisfying listen!
My perfect comunione in all musìc type from experimental jazz,to
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Most products come with a 1-year warranty; cables and accessories have shorter or separate terms.
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:
- Processing time: 3-4 weeks, subjected to manufacturer's updates
- 4-6 weeks for UIEM with custom design, no cancellation of UIEM (custom design) orders once ordered
- Images are for reference only. Actual product and packaging may differ from the images. Final product is based on what is actually received.
Note:
- No cancellation of orders once ordered.
- All orders to be shipped out sequentially.
