DUNU-TOPSOUND’s Falcon line has been a mid-tier favorite for a while, and the Falcon Ultra is the version that finally trickles down some of the flagship Zen Pro’s driver research into a $239 in-ear monitor. It’s built around a single dynamic driver, but not a cheap one — the shared technology lineage with DUNU’s top-end model is the whole selling point here.
| Brand | DUNU-TOPSOUND |
| Model | Falcon Ultra |
| Driver | 10.7mm dynamic, ECLIPSE Architecture |
| Diaphragm | Lithium-Magnesium alloy |
| Nozzles | Two swappable, blue stainless / gold-plated brass |
| Cable | DUW02 Pro Litz, MMCX connector |
| Price | Around $239 |
Driver & Diaphragm
Inside each shell sits a 10.7mm dynamic driver built on DUNU’s newer-generation ECLIPSE Architecture, using a Lithium-Magnesium alloy diaphragm — the same family of driver material found in the flagship Zen Pro, just tuned for a different price bracket. The magnet assembly is an external ring-type design that DUNU markets as delivering “Tesla-level” magnetic flux, with the magnets CNC-milled rather than stamped for tighter tolerances. In practice this translates to a driver that can move quickly without breaking up at higher volumes, which is usually where cheaper single-DD designs start to show strain.
Shell & Nozzles
The stainless steel shells get a polished “Klein Blue” finish that photographs beautifully and holds up well to scratches in daily carry. What sets the Falcon Ultra apart from a lot of similarly priced IEMs is the inclusion of two swappable metallic nozzle sets:
- Blue stainless steel nozzles — tuned for a more transparent, pristine sound signature
- Gold-plated brass nozzles — an alternate tuning with a slightly warmer, richer character
Swapping nozzles takes seconds and genuinely changes the tonal balance enough to notice, which is a nice bit of flexibility at this price rather than being locked into one signature.
Cable & Fit
The Falcon Ultra ships with DUNU’s DUW02 Pro Litz cable, a silver-plated copper design terminated in MMCX rather than the 2-pin connector used on some of DUNU’s other models. Build quality on the cable is a step above what you’d expect bundled at this price — it doesn’t feel like an afterthought the way stock cables sometimes do on competing sets. You can compare cable specs directly on DUNU-TOPSOUND’s official site, which also lists the full accessory kit.
Sound Impressions
With the blue stainless nozzles installed, the Falcon Ultra sounds noticeably cleaner and more resolving than its Falcon Pro predecessor, with a bass that’s controlled rather than boosted. Swap to the gold-plated brass nozzles and there’s a clear step up in warmth and note weight, useful for genres that want a bit more body in the low-mids. Detail retrieval for a single dynamic driver is genuinely impressive — you can hear the ECLIPSE Architecture doing its job when it comes to separating layered instrumentation without smearing transients. Retailers like Linsoul’s DUNU catalog and HiFiGo both stock it if you want to check current availability and bundle options.
Where it falls slightly short of full-flagship territory is soundstage depth — it’s wide enough, but doesn’t have the layered three-dimensionality you’d get from the Zen Pro. That’s an entirely fair tradeoff for a quarter of the price.
Comfort and Long-Session Fit
Stainless steel shells can go either way on comfort — some designs are too dense to wear comfortably for more than an hour, others are shaped well enough that the extra weight disappears. The Falcon Ultra falls into the second category. The shell contour follows the Falcon Pro’s already-proven ergonomics, which means DUNU didn’t try to reinvent the shape just because the internals changed, and that decision pays off during longer listening sessions at a desk or during a commute.
The nozzle diameter is standard enough that most aftermarket eartips fit without issue, which is worth knowing if the stock tips don’t seal well in your ears. A few sessions with foam tips versus the stock silicone tips showed a small but real difference in sub-bass presence, so it’s worth experimenting if you’re chasing the most impactful low end this driver can deliver.
How It Stacks Up Against the Competition
At $239, the Falcon Ultra sits in a crowded part of the market where several other single-DD and hybrid designs compete for attention. What sets it apart isn’t raw driver size or a flashy multi-BA count — it’s the combination of a genuinely upgraded driver material shared with a flagship model, a real dual-nozzle tuning system rather than a marketing gimmick, and a cable that doesn’t need to be replaced on day one. Competing sets in this price bracket often nail one of these three areas while cutting corners on another; the Falcon Ultra’s balance across all three is what makes it a repeat recommendation.
It won’t out-resolve a true flagship costing three or four times as much, and nobody buying at this price should expect that. But measured against other sub-$250 single dynamic driver IEMs, it’s consistently near the top of that particular shortlist.
Common Setup Problems and Fixes
- Problem: Sound seems dull or flat right out of the box. Confirm which nozzle set is installed — the gold-plated brass nozzle is noticeably warmer, and if you expected a brighter signature you may have the wrong nozzle installed rather than a defective unit.
- Problem: The MMCX connector feels loose or the earpiece rotates on its own. This is somewhat normal for MMCX since it is a rotating connector by design, but if it disconnects during normal movement, check that the connector is fully seated with an audible or tactile click.
- Problem: Bass feels thinner than expected. Double-check eartip seal first — try the largest stock tip that is still comfortable, since a partial seal disproportionately affects low-end response on a single dynamic driver design.
- Problem: Nozzle swap does not seem to change the sound. Make sure the old nozzle was fully unscrewed or unclipped and the new one is seated flush against the shell; a partially attached nozzle can leak air and mask the tuning difference.
- Problem: Volume seems too low even at max device volume. A 10.7mm single dynamic driver is easy to drive, so this usually points to a weak source (an older phone or laptop output) rather than the earphone itself; try a basic USB-C dongle DAC to confirm.
FAQ
Does the nozzle swap actually change the sound, or is it a gimmick?
It’s real. The gold-plated brass nozzle noticeably warms up the midrange and adds a bit of low-end body compared to the stock blue stainless nozzle.
Is MMCX or 2-pin better for durability?
Both are reliable in daily use; MMCX rotates rather than pulls straight out, which some users prefer for cable routing over the ear.
Does it need an amp?
No. The single dynamic driver design is easy enough to drive straight from a phone or laptop headphone jack.
How does it compare to the standard Falcon Pro?
The Ultra uses a newer-generation driver and diaphragm material, plus the swappable nozzle system, both of which the standard Falcon Pro lacks.
Which nozzle should most people start with?
Start with the blue stainless nozzle for a more neutral baseline, then try the gold-plated brass nozzle if you find yourself wanting more warmth or bass presence for specific genres.
Packaging and unboxing are also a step above what’s typical at this price — DUNU includes a proper carrying case, a generous eartip selection covering multiple size and material combinations, and the two nozzle sets stored in their own labeled slots so you’re not hunting for a tiny loose part in a bag of accessories. It’s a small detail, but it signals the kind of attention DUNU has put into the whole package rather than just the driver inside it.
Gear notes and impressions here come from hands-on time with the unit, cable swaps included, before any of it gets written up.