Sony IER Z1R VS Softears RSV MK II
IEM Comparison: Expert & Community Scores Side-by-Side
Sony IER Z1R and Softears RSV MK II use 2DD+1BA and 5BA driver setups respectively. Sony IER Z1R costs $1,700 while Softears RSV MK II costs $700. Sony IER Z1R is $1,000 more expensive. Softears RSV MK II holds a slight 0.1-point edge in reviewer scores (8.1 vs 8.2). Sony IER Z1R has significantly better bass with a 1.4-point edge, Softears RSV MK II has significantly better mids with a 1.5-point edge, Softears RSV MK II has significantly better dynamics with a 1-point edge, Sony IER Z1R has slightly better soundstage with a 0.3-point edge, Softears RSV MK II has better details with a 0.5-point edge and Sony IER Z1R has better imaging with a 0.6-point edge.
Insights
| Metric | Sony IER Z1R | Softears RSV MK II |
|---|---|---|
| Bass | 9.5 | 8.1 |
| Mids | 6.8 | 8.3 |
| Treble | 7.8 | 7.9 |
| Details | 7.4 | 7.9 |
| Soundstage | 8 | 7.7 |
| Imaging | 8.6 | 8 |
| Dynamics | 7.3 | 8.3 |
| Tonality | 8.1 | 8.4 |
| Technicalities | 8.1 | 7.9 |
Sony IER Z1R Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
8.1Very Positive
Softears RSV MK II Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
8.2Very Positive
Reviews Comparison
Sony IER Z1R reviewed by Super* Review
9*
* score rescaled + normalized
Softears RSV MK II reviewed by Super* Review
2025-09-09
8*
* score rescaled + normalized
Youtube Video Summary
Softears RSV MK II brings back the all-BA ethos at $700 with five armatures and a promise of “re-engineered BA bass.” Build and accessories feel premium (sleek shells, plush case), while the cable choice is quirky—4.4 mm only with a 3.5 mm pigtail. Fit is outstandingly secure and custom-like but on the larger side with a longer nozzle, so comfort depends on ear size. Softears’ Ultra Clear tips work well; the new metal-ring variant adds little beyond novelty.
On the graph, bass looks like gigabass, yet in ear it settles into a warm, weighty foundation without steamrolling the mids. The midrange follows a “new-meta neutral” tilt—fuller than Harman with forward upper-mids—while treble lands clean and sparkly without fatigue. Imaging is tidy rather than cavernous; separation and delineation are convincing, with the top end executed better than the bottom. BA bass here is among the more physical and satisfying of its kind, though tactility can be track-dependent and turn a bit tubby on very bass-heavy mixes.
Against peers, Symphonium Meteor sounds warmer and more “special” but less all-round; DUNU SA6 MK2 is more colored with janglier treble and the least convincing bass; 7th Acoustics Supernova trades warmth for vivid, bright-tilted imaging; Softears Studio 4 is lighter on bass and airier; and the old Moondrop S8 stays the lively, vocal-centric counterpoint. Net take: a supremely competent, character-light all-rounder that favors bass weight over panoramic staging. Verdict: 4/5 stars—a welcome throwback done right, and notably cheaper than the original RSV launch price.
Super* Review original ranking
Super* Review Youtube ChannelBuy Softears RSV MK II on Linsoul
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Sony IER Z1R reviewed by Jays Audio
9
Reviewer Score
Jays Audio Youtube Channel
Softears RSV MK II reviewed by Jays Audio
2025-08-28
8
Reviewer Score
Youtube Video Summary
Softears RSV MK2 shifts from the OG’s vocal-centric tilt into a bass-forward all-rounder. The sub-bass and mid-bass hit with real slam and weight, giving drums and bass guitars a satisfying, dynamic punch. Upper mids (3–6 kHz) are tamed to avoid shout, while a gentle 1–2 kHz rise keeps vocals open and natural—slightly less pushed than the original but still clear. Treble is smooth with decent air; not super sparkly and there’s no EST “sauce,” but it stays clean and non-fatiguing.
As a package, MK2’s standout is the low-end texture—thunderous yet controlled—making it one of the more engaging bassy sets under four figures. Technical performance is solid for the tier, though some rivals at lower prices bring more raw detail and EST extension. Build and accessories get a tasteful, modern refresh. For best balance, the stock tips work well; bass-boosting or treble-opening tips can shift it toward a more V-shape at the expense of overall smoothness.
On genre fit, MK2 shines with hip-hop, pop, EDM, and R&B, where its punch and warmth bring rhythms to life; for orchestral or leaner acoustic picks, the bass can edge forward depending on the mix. It scales to mid–high volumes nicely (around the 70–80 dB zone) without turning sharp. Compared with the OG RSV—now likely affected by a silent retune in recent units—the MK2 is the safer buy: less shout, more authority down low, and a broader all-rounder appeal. Recommended, especially if found below full MSRP, for listeners craving tasteful bass with natural mids and relaxed, smooth treble.
Jays Audio Youtube Channel
Sony IER Z1R (more reviews)
Sony IER Z1R reviewed by Yifang
8
Reviewer Score
Sony IER Z1R reviewed by Crin
8
Reviewer Score
Youtube Video Summary
Sony’s IER-Z1R goes full luxury flex: an over-the-top unboxing with nested boxes, a ring-case display, two stock cables (3.5 mm SE and 4.4 mm balanced), and a mountain of tips. The shells are solid metal and surprisingly heavy, feeling like they could survive a drop—or crack a desk. Driver count is “only” three, but the focus is on large dynamic drivers rather than BA stuffing; build and presentation scream premium from the first lift of the lid.
Sonically, the headline is the bass: deep, rumbly, clean, and fast, delivering both sub-bass rumble and well-separated hits—described as the best bass heard from a universal IEM. The midrange has a thicker, weighty character that plays nicer with brighter voices and pop than with male vocals or cello, which can feel a touch heavy. The treble is fit-dependent: a deep seal nets a smooth, extended top end; a shallow fit can tilt peaky and splashy—so ear anatomy and tip choice matter more than usual.
On source pairing, the IER-Z1R scales on a beefy amp but runs just fine off an Apple dongle, undermining fears that it’s a diva. As for value, the verdict is blunt: performance is stellar, but not cost-efficient; similar results can be had for half or even a quarter of the price. This set targets listeners chasing the last 10–20% of performance (or those who simply want the full Sony flagship experience), with the caveat that fit decides whether the treble sings or stings.
Crin Youtube Channel
Sony IER Z1R reviewed by Nymz
8
Reviewer Score
Sony IER Z1R reviewed by Smirk Audio
7.9
Reviewer Score
Sony IER Z1R reviewed by Precogvision
7.9
Reviewer Score
Youtube Video Summary
Sony’s IER-Z1R puts on a proper flagship show from the jump: an exquisite unboxing, hefty zirconium shells, and faceplates with a watch-grade finish that scream luxury. Sonically, the focus is the sub-bass—massive extension, physical rumble, and satisfying decay that together form a true basshead endgame. Compared to the 64 Audio U12t, the Z1R’s low end is clearly superior in slam and texture, while avoiding plasticky BA timbre; resolution is strong overall, even if the U12t keeps a slight edge in microdetail.
The tuning skews moderately V-shaped: male vocals can sound a touch hollow from a dip around the lower mids, whereas female vocals pop with presence and clarity—ideal for J-/K-pop and anime OSTs. Treble carries good extension but emphasizes stick impact that can draw attention over the air up top, a preference call more than a flaw. Staging is notable: among IEMs, the Z1R projects a “speaker-like” scale with one of the widest head-stages heard—still IEM-bound, but grander than most peers, and paired with a warm, engaging timbre.
The catch is fit and ergonomics. The shells are large and unforgiving, and for many ears comfort collapses within minutes; seal is extremely sensitive, with a poor fit turning the treble peaky around ~6 kHz. It’s the single biggest caveat: audition first rather than blind-buying. When the fit cooperates, this is a phenomenal-sounding flagship—arguably preferred over U12t for the right genres—yet its brilliance is undercut by comfort risks that will be a deal-breaker for some.
Precogvision Youtube Channel
Sony IER Z1R reviewed by Shuwa-T
7.9
Reviewer Score
Sony IER Z1R reviewed by Tim Tuned
7.5
Reviewer Score
Tim Tuned Youtube Channel
Softears RSV MK II (more reviews)
Softears RSV MK II reviewed by Jaytiss
2025-09-03
9.2
Reviewer Score
Jaytiss Youtube Channel
Softears RSV MK II reviewed by Fox Told Me So
2025-09-26
7.8
Reviewer Score
On the graph, it diverges from JM-1 or Harman, choosing its own path. Sub-200 Hz is elevated, giving the bass notable weight and warmth, but also risking congestion. A dip between 200–600 Hz thins mids and robs some body from vocals and instruments, though it does clean up edges. Then comes a surprising 14 kHz BA-driven peak, adding air, shimmer, and openness—rare for an all-BA set!
In practice, bass hits with real presence for BA, punchy and convincing though not as deep as DD. Mids lean slightly thin, a bit lack of density, making instruments less woody. Treble is airy and crisp thanks to that 14k lift, but may edge bright for sensitive listeners. Stage favors forward bass and a sense of openness, though not massive in depth.
Verdict: It’s bassy, airy, and a touch thin in the middle—a distinct tuning philosophy that stands apart from the crowd.
Fox Told Me So original ranking
Fox Told Me So Youtube Channel
Softears RSV MK II reviewed by Head-Fi.org
8.2
* score rescaled + normalized
Softears RSV MK II reviewed by Web Search
2025-08-28
8
Reviewer Score
The Softears RSV MK II refines the original RSV with an all-5BA design and a 4-way crossover, targeting a stable “reference sound” while improving driver control and airflow management. It’s easy to drive at 122 dB/Vrms, 7 Ω, and the build mixes medical-grade resin with CNC-milled aluminum and forged carbon for a robust, low-resonance shell; MSRP is $699.
On paper, the tuning remains neutral with a bass lift: dual Knowles CI22955 woofers aim to give BA-bass more texture and weight, an improved ED driver anchors clean mids, and a SWFK unit handles upper treble for a smoother, less fatiguing top end. Softears’ LRC network and dual pressure-relief approach target consistent FR and reduced ear pressure, which should aid long listening sessions and imaging stability.
Subjectively, this positions the RSV MK II as a coherent, midrange-centric set with tight, controlled low-end rather than maximal slam, and a smooth treble that trades sparkle for fatigue-free listening. Soundstage is moderately wide with tidy imaging; technicalities are competitive for the class but won’t chase ultra-etched detail specialists. Given the tuning goals and efficient drive requirements, value will appeal most to listeners prioritizing tonal accuracy and midrange timbre over sheer sub-bass impact or treble air.
Sony IER Z1R Details
Driver Configuration: 2DD+1BA
Tuning Type: V-Shaped
Brand: Sony Top Sony IEMs
Price (Msrp): $1,700
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Softears RSV MK II Details
Driver Configuration: 5BA
Tuning Type: Neutral with Bass Boost
Brand: Softears Top Softears IEMs
Price (Msrp): $700
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Sony IER Z1R User Review Score
Average User Scores
Average User Score: n/a
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Softears RSV MK II User Review Score
Average User Scores
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Sony IER Z1R Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.6Gaming Grade
B+Softears RSV MK II Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.6Gaming Grade
ASony IER Z1R Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A+- Expect a tasteful, well-judged response that feels both musical and true to the source. Great synergy with a wide range of genres.
Average Technical Grade
A+- You get an articulate, polished performance with immersive stage depth and great control. There's a sense of polish across the whole spectrum.
Softears RSV MK II Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A+- It delivers a coherent, natural timbre that remains captivating across genres. Acoustic instruments sound lifelike and textured.
Average Technical Grade
A- Overall technical control is strong, presenting instruments with clarity and sensible staging. Textures are portrayed with satisfying clarity.
Sony IER Z1R User Reviews
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