Pula Unicrom VS Fosi Audio IM4
IEM Comparison: Expert & Community Scores Side-by-Side
Pula Unicrom and Fosi Audio IM4 use 1DD and 1DD (10mm beryllium-coated) driver setups respectively. Pula Unicrom costs $80 while Fosi Audio IM4 costs $99. Fosi Audio IM4 is $19 more expensive. Pula Unicrom holds a clear 0.8-point edge in reviewer scores (7.1 vs 6.3). Pula Unicrom has significantly better mids with a 1-point edge, Pula Unicrom has significantly better dynamics with a 1-point edge and Pula Unicrom has significantly better soundstage with a 1.5-point edge.
Insights
| Metric | Pula Unicrom | Fosi Audio IM4 |
|---|---|---|
| Mids | 6 | 5 |
| Treble | 5 | 5 |
| Soundstage | 6.5 | 5 |
| Dynamics | 7 | 6 |
| Tonality | 6.1 | 5.3 |
| Technicalities | 5 | 5 |
Jaytiss Reviews Comparison
Pula Unicrom reviewed by
2025-08-09
7.1
Reviewer Score
Youtube Video Summary
The Pula Unicrom offers a comfortable and well-built shell with clear left/right indicators and a swappable cable featuring a secure 4.4mm connector. It comes in four colors and includes a highly praised magnetic case considered excellent value. The cable itself is noted as one of the nicer options at this price point, though the lack of a USB-C option is a minor drawback.
Sonically, the Unicrom delivers a smooth, slightly bassy, and darkish signature with visceral, thick bass and rich, thick mids. Its upper mids are nice and not overly shouty or sibilant, resulting in a cohesive dynamic driver sound. While it lacks the absolute best detail, imaging, and air, it provides a fun and engaging listen, described as a strong V-shape. Graph comparisons show it shares similarities with the much more expensive Moondrop Dragon and the RT10 Pro, offering that kind of tonality at a significantly lower price. It faces stiff competition around $100, like the RT10 Pro and Letshuoer S08, but holds its own as a competent, colorized option.
Ultimately rated a solid B minus, the Unicrom earns a value star and a strong recommendation as a great all-rounder under $100. It's highlighted as a beautifully executed product with satisfying, rich mids and bass, making it a compelling choice for those seeking an organic, fun sound, especially as a gift. While the lower mid warmth might not suit everyone and detail seekers might prefer sets like the Hexa, the Unicrom stands out as a unique and interesting bassy dynamic driver option at its price.
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Fosi Audio IM4 reviewed by
2025-10-16
6.3
Reviewer Score
Youtube Video Summary
Fosi Audio IM4 brings a beryllium-coated single DD in a compact shell with thoughtful venting that behaves almost open-back for comfort during long sessions. Build is surprisingly premium for ~$100: a small, well-finished nozzle that grips tips, a light but durable cable with color-coded channels and a working chin slider, a tidy case, and tuning nozzles (black/gold) plus multiple tips. It’s the kind of fit and finish usually saved for pricier sets.
Tonally, this is an engaging, warm-rich tuning with elevated sub-bass, good texture, and plenty of detail—not a neutral reference. There’s energy in the 2–4 kHz region and a bit of 5–6 kHz bite that can read as “cat-ear” presence, trading strict smoothness for extra soundstage perception and clarity. Versus the many neutral options at this price, IM4 feels more characterful and fun; think closer to sets that use a staged upper-mid/treble contour than to flat targets. Filters/foams or a touch of EQ can gently tame peaks while keeping the lively character.
On the scoreboard: bass 7/10 (clean shelf and punch), mids a touch recessed versus a neutral target, treble lively with agreeable detail, and stage/detail notably good for the class. Overall, a well-built, fun, and slightly audiophile-tuned single-DD that will appeal to listeners who value texture and excitement over strict neutrality—plus rare build quality and extras at this price make it a solid value.
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Pula Unicrom Details
Driver Configuration: 1DD
Tuning Type: V-Shaped
Price (Msrp): $79.99
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Fosi Audio IM4 Details
Driver Configuration: 1DD (10mm beryllium-coated)
Tuning Type: Neutral
Price (Msrp): $99
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Pula Unicrom Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B- The tuning leans easygoing, yet occasional unevenness nudges it away from greatness. A bit of EQ polish can smooth things nicely.
Average Technical Grade
C+- The presentation is steady if unspectacular, holding onto essential details when the music stays simple. Fine details occasionally slip through the cracks.
Fosi Audio IM4 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
C+- The tuning leans easygoing, yet occasional unevenness nudges it away from greatness. A bit of EQ polish can smooth things nicely.
Average Technical Grade
C+- Overall technicalities are acceptable, delivering enough clarity for casual sessions. Imaging is serviceable though not immersive.
Pula Unicrom User Reviews
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