In-Ear MonitorOverreview

Softears RSV

The vocal IEM nobody argues about — and the technicalities everybody does.

22 sourcesUpdated
$730Typical US price

Score aggregates reviewer opinions across topics.

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Softears RSV

The short version

What to know.

An all-balanced-armature monitor tuned warm of neutral, with a sub-bass-led low end and a midrange that sources agree on more strongly than almost anything else at the price — natural, forward, and never shouty. It isolates very well and runs off a phone. Opinion splits, sometimes sharply, on how much treble sparkle it has, how wide it stages, how much detail it resolves, whether it feels dynamic, and whether the large sealed shell is comfortable or claustrophobic. What it costs today depends heavily on where you buy it.

About this product

RSV = "Reference Sound Five"; Softears also badges it RS5, and retailers list it as "RSV RS5". Not the 2025 RSV-MKII, which is a different aluminium-shelled, bass-boosted set — nor the RS10, Cerberus, Turii, Studio4 or Volume S.

Softears arrived in the West in 2021 as the quiet sibling of Moondrop — same city, shared engineers and drivers, a wholly separate company — and the RSV was the set that made the introduction. Five balanced armatures, a three-way crossover, no dynamic driver anywhere, and a name that promises the least fashionable thing in audio: reference.

It landed at $729.99 into the most contested price bracket of its era, against the Moondrop S8 and the Thieaudio Monarch, and it has been a fixture of best-of lists ever since. What reviewers do with it is unusually consistent: they praise the voice and then spend the rest of the review arguing about everything else.

A good fit for

  • Vocal-first listeners — this is the aspect nobody argues about
  • Long, unfatiguing sessions, and anyone sensitive to treble glare
  • Commuting or stage use, where the sealed shell's isolation pays off
  • Phone and dongle users who don't want to carry an amp

Think twice if

  • You want slam and physical bass impact — the depth is there, the punch is contested
  • You chase air and sparkle up top; the 10 kHz dip is real and no tip fixes it
  • You want a wide, out-of-head stage
  • You have smaller ears, or you're prone to pressure build-up from sealed designs
  • You're buying primarily for detail retrieval at this price

The reviewer consensus

Agreement &
disagreement.

7 / 12topics divide opinion
midstonalityisolationbassbuildtreblesoundstagedetaildynamicsimagingcomfortvalue
3 Strong agreement2 Mostly agree7 Divided opinions

Common ground6

  • Vocals and midrange timbre are the reason to own it — the single strongest point of agreement across every source
  • It sounds unusually natural for an all-balanced-armature set; reviewers repeatedly note it doesn't have the usual BA edge
  • The low end is sub-bass-led and does not bleed into the mids — measurements from five rigs back this exactly

Points of contention7

  • Treble reads as smooth and linear to some, as short on sparkle and air to others — a unanimous 10 kHz dip sits underneath both readings
  • Soundstage splits almost evenly between 'narrower than its peers' and 'above average in depth'
  • Resolution is called merely average for the price by most, genuinely impressive by a substantial minority

A closer listen.

12 topics · 7 divided
Left: criticalRight: positiveTighter lines: more agreement

Mids

PositiveStrong agreement
Reviewer sentiment14 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

The strongest agreement in the entire field: vocals and instrumental timbre are why people keep this set. A small minority hears it turn forward at high volume.

“The mids are the star.”

Faxepremium, IEMRanking

“absolutely nothing in the way of shape partial overtones, shouty vocals, hollow mids, or hot highs”

Marcus, Headfonics

“Very well-balanced tonality with surprisingly good timbre, though slightly lacking definition.”

Crinacle, IEM Ranking List

Measured

Ear gain peaks at +7.3 to +10.5 dB between 2.90 and 3.07 kHz across five independent rigs — a 170 Hz spread in placement — then slides 2.5–3.7 dB down to 4 kHz. Forward, but with the peak sitting where it reads as presence rather than shout.

Link to this topic

The hardware

Specifications.

Checked

Design

Type
In-ear monitor
Drivers
5 × balanced armature5BA

Electrical

Impedance
8 Ω
Sensitivity
125 dB/V≈ 104 dB/mW
Frequency response
5 Hz – 40 kHz

Manufacturer-published figures, not measurements · from hifigo.com.

Follow the evidence

Sources 22

1–6 of 22 sources

Read with context

Limitations & method.

As of

What to keep in mind 6

  1. A read of where the reviews land as of August 2026. The RSV is a 2021 design and the field has moved — Softears' own RSV-MKII now sits beside it at a lower list price, and most online chatter has followed the newer set.

  2. The price is the moving part. Most of these verdicts were written against the $729.99 list, which two of the three main retailers still charge — but a third sells it for around $530, and the value split largely tracks which number you're looking at.

Where to buy Product & retailer links