My Thieaudio Valhalla Review
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!)
