HeadphoneOverreview

Dan Clark Audio Expanse

It measures like the target and still splits the room — over its bass, its midrange and the space it draws.

37 sourcesUpdated
$4,500Typical US price

Score aggregates reviewer opinions across topics.

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Dan Clark Audio Expanse

The short version

What to know.

An open-back planar flagship that most sources rate highly and a vocal minority does not get on with. Sources agree on build, isolation unusual for an open-back, comfort, resolution and very low distortion, and that it needs a genuinely powerful amplifier. They split on nearly everything tonal and spatial: a deliberate upper-bass lift is heard as drive, as bloat or as not enough bass; the midrange reads natural to most and shouty to some; the treble is smooth to most and short on air to others; and the stage is called enveloping, merely wide, or closed-in. Several of the dissents trace to fit — the pads are deep, the sound shifts with position, and the maker now ships a clamp kit.

About this product

The open-back flagship. It shares its 76 × 51 mm planar driver generation and the AMTS waveguide with the closed-back STEALTH but is voiced differently — more upper bass and a little more upper midrange on the same rigs — and the two are sold as co-flagships. Not the older ETHER 2 it replaced at the top of the open line, and not the cheaper AMTS-equipped E3 or Noire X.

Dan Clark Audio's Expanse arrived in September 2022 as the open-back companion to the closed-back STEALTH: the same generation of planar driver, the same Acoustic Metamaterial Tuning System sitting between driver and ear, the same folding titanium-wire suspension, and the same $3,999 asking price. It now lists at $4,499.99.

It landed with an unusual objective reputation — the most target-compliant open-back one measurement lab had tested — and an unusually divided subjective one. Most reviewers and owners hear a balanced, resolving, comfortable flagship; a determined minority, including two of the headphone world's best-known measurers, hear shout, a closed-in stage and missing air. How it sits on your head turns out to be part of the story.

A good fit for

  • Listeners who want near-target tuning with a little upper-bass weight and no glare
  • Long listening sessions, if the fit seals for you
  • Owners of a powerful desktop amplifier
  • Anyone who wants an open-back that doesn't broadcast to the whole room

Think twice if

  • You chase air and sparkle at the very top of the treble
  • You want the widest, most out-of-head stage at the price
  • You are sensitive to upper-midrange presence
  • You can't audition it — the fit-dependent splits here make a blind buy at this price risky
  • Your source is a portable player or a modest desktop amp

The reviewer consensus

Agreement &
disagreement.

7 / 12topics divide opinion
buildisolationdetaildynamicscomforttonalitybassmidstreblesoundstageimagingvalue
2 Strong agreement3 Mostly agree7 Divided opinions

Common ground5

  • Built to last and folds into a small hard case; the supplied cable is the weak point
  • Isolates and leaks less than most open-backs
  • Resolution and very low distortion are near the top of the class

Points of contention7

  • Tonality: close-to-target balance for most, a graph that doesn't predict the sound for a measurement-literate minority
  • Bass splits three ways over one deliberate upper-bass lift: welcome drive, bloat on dense mixes, or still too polite
  • Mids read natural to most and shouty to some — the ~3 kHz rise is small but real

A closer listen.

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

Tonality

PositiveDivided opinions
Reviewer sentiment19 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Sources split, unevenly. Most hear a balanced, slightly warm tuning close to the common targets; a measurement-literate minority hears the deviations — the upper-bass lift and the upper-mid rise — as the whole character.

Measured

Three rigs with public raw data (oratory1990's GRAS 43AG, Super* Review, unheardlab's GRAS 43AG-4) put it within about 1–3 dB of each rig's own HD 600 from 300 Hz to 10 kHz, with 10–12 dB more sub-bass. Against oratory1990's target it sits +2.7 dB at 150–200 Hz and −2.9 dB at 6–10 kHz. ASR's Maiky76 scores it 76.1 unequalised and 90.4 with EQ, and concludes it does not need EQ.

vs. listeners — The dissenters are not disputing the graph — Resolve's own GRAS and 5128 curves agree with everyone else's. They are reporting that it does not sound the way that graph usually sounds to them, which is why fit and ear position keep coming up.

Where it splits
close to target and balanced — slightly warm, nothing to fix81%

“compliance to the target is the best of any open-back headphone that I have tested”

amirm, Audio Science Review
the graph doesn't predict it — bassy, shouty or dry to these ears19%

“This is one where what I see on the graph just doesn’t track with what I hear”

Resolve, Headphones.com forum
Link to this topic

The hardware

Specifications.

Checked

Design

Type
Open-back
Drivers
1 × 76 mm planar magnetic (76mm x 51mm single-ended)
Housing
aluminum, carbon fiber, and titanium

Electrical

Impedance
26 Ω
Sensitivity
90 dB/mW≈ 105.9 dB/V

Connection

Cable
Detachablecommunity-sourced: detachable cable
Plugs supplied
6.35 mm, 4-pin XLR, 2.5 mm balanced, 4.4 mm balanced, 3.5 mm

Physical

Weight
418 g

Manufacturer-published figures, not measurements · from danclarkaudio.com, headphones.com. Detachable cable not published by the maker — community-sourced from hands-on reviews: headfonia.com, head-fi.org (archived).

Follow the evidence

Sources 37

1–6 of 37 sources

Read with context

Limitations & method.

As of

What to keep in mind 6

  1. A read of where the reviews land as of October 2026. Most were written in 2022–23 at the $3,999 launch price; it now lists at $4,499.99, so the value verdicts were formed against a cheaper number.

  2. Fit matters more than usual here. The pads are deep, the sound shifts with where your ear sits and how well the cups seal, and several of the disagreements below line up with fit — try it on your own head before buying if you can.

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