By aspect — in detail
The framing splits. On the bench it's warm — a smooth balance that rolls off the treble — and one camp hears exactly that: warm, smooth, a touch dark. The other camp, leaning on the studio framing and the absence of obvious peaks, calls it neutral, linear, 'reference.' Same rolled-treble balance, opposite labels.
Measured
RTINGS measures the Sound Signature as 'Warm' — close to its target through the bass and mids, with the treble rolled off (Treble Amount 'Underemphasized', about -5 dB), which 'can give the impression of a bassy tuning.'
⚠ vs. listeners — The bench reads warm because of the rolled-off top end; the 'neutral / reference' camp hears the lack of harsh peaks as flatness, but measured it's warm-tilted via the dark treble, not truly linear.
Where it splits
Warm, smooth, a touch dark — easy and rounded rather than flat.55%
“delivering impressive weight combined with a smooth, albeit slightly dark, sound signature.”
Headfonics
Neutral / linear 'reference' — precise and dry, not a warm Audeze.45%
“this isn't a warm, relaxed Audeze like the older LCD-2. The LCD-S20 plays in a different league – one made for precision, not seduction.”
Headfonia
Sources agree on the character — clean, tight, deep-reaching and notably low on bloom for a closed-back — and split on the quantity. One camp hears the new 'SLAM' low end as the highlight: powerful and textured. The other hears it as reserved and light on slam, short of the punch they expected. The reconciling thread is that the mid-bass is deliberately restrained, so slam-seekers read it as weak while control-lovers read it as excellent.
Measured
Despite the 'SLAM' marketing, RTINGS measures Bass Amount as 'Slightly Underemphasized' (about -1 dB) — close to neutral, not elevated — and notes the warm balance only 'gives the impression of a bassy tuning.' Several listeners did hear an elevated low end (Headfonics describes a shelf from ~20–200 Hz on its own bench), while the harsher reads (Audio46 calls it 'a very weak bass response'; one r/headphones owner gets 'more attack and rumble' from his LCD-X and DT 1770) line up with the restrained mid-bass and a sub-bass that softens in the lowest octave.
⚠ vs. listeners — Audeze sells it on dynamic bass and some reviewers heard a clear low-end lift; RTINGS' rig read the bass slightly below neutral. The split is partly real tuning (restrained mid-bass punch) and partly the warm/dark balance making the bass read as prominent on some heads and lean on others.
Where it splits· split roughly even
Deep, clean, powerful — the SLAM low-end is the highlight.
“The low-end response is the star of the show. It’s lifted, generating excellent power, but it’s not muddy or full of bloom.”
Headfonics
Clean but reserved — light on slam and sub-bass weight.
“they exhibit some fall-off below 35Hz, resulting in a slightly mellow sub-bass range.”
PCMag
Everyone who measures or notices it agrees the top end is rolled off; they split on whether that's a feature or a flaw. One camp finds it smooth, relaxed and non-fatiguing; the other finds it dark, closed-in and short on air. A minority hear the opposite — air and sparkle — which the measurement doesn't support.
Measured
RTINGS measures Treble Amount as 'Underemphasized' (about -5 dB), with the response rolling off in the treble — 'some may find the top-end lacks detail or clarity.' On the Headphones.com forum, Fc-Construct put it plainly: 'The treble is dark, which is fine.'
⚠ vs. listeners — A handful of reviewers (MajorHiFi, Headfonia, Audio46) hear extra air or sparkle, which contradicts the -5 dB roll-off — likely because RTINGS flags the LCD-S20's frequency-response consistency as poor (highly sensitive to fit, hair and glasses), so how much treble you actually get varies a lot from one set of ears to the next.
Where it splits
Smooth / relaxed / non-fatiguing — an easy, pleasant top end.45%
“The top end of the LCD-S20s was smooth and exhibited more of a ‘70s hi-fi system vibe when compared to the ultra-revealing reference level high end of the LCD-X and MM-500 models. I mean this in the best way!”
Tape Op
Dark / rolled-off — lacks air and top-end clarity.55%
“the drop in energy from 3-8k, giving the LCD-S20 a darker quality compared to its sibling Audeze headphones.”
Headfonics
Most reviewers — typically those with review units — call the midrange a strength: natural, clear and well-resolved, especially on vocals. Several listeners who lived with the headphone hear the opposite: a dip that pushes the mids back and thins female vocals. The bench reads the mids as on-target, so the disagreement is real and listener-dependent.
Measured
RTINGS reads the midrange as compliant — the frequency response 'matches our preference curve in the bass and mids.' The recurring dip complaint (J-Fly on the forum said female vocals 'sounded like I took a deep sea dive in the Indian Ocean') tracks the warm balance plus the poor fit-to-fit consistency rather than an obvious on-paper recession.
Where it splits
Natural, clear, detailed vocals — a strength.55%
“Voices are a highlight here. Male or female, everything sounds natural and grounded, with that planar smoothness that avoids harshness, even on bad recordings.”
Headfonia
Dipped / recessed — clarity and female vocals suffer.45%
“the midrange I found to be pretty dipped and lost a lot of clarity. The treble is dark, which is fine.”
Fc-Construct (Headphones.com forum)
Soundstage
Contested11 srcClosed-back-typical, with a genuine width split. Several reviewers and owners find it unusually spacious for a sealed headphone; others hear an intimate, flat presentation with limited depth and height. The rolled-off treble, which trims air and headroom, is part of why the stage reads small to some.
Measured
A sealed design with no angled-monitor interaction (RTINGS); Headfonics notes the upper-mid/lower-treble dip 'can lack a little bit of headroom,' reducing perceived height — which helps explain why the same headphone reads wide to some and closed-in to others.
Where it splits
Spacious / wide for a closed-back.55%
“The soundstage is detailed and spacious, with a precise sense of specific sounds in space.”
Tape Op
Intimate / flat — limited dimension, depth and height.45%
“Sounds sit on a flat plain that, while wide and encompassing, shows little dimension and openness.”
MajorHiFi
Broadly a strength and not contested: precise placement and good separation, repeatedly called accurate and pinpoint. A couple of sources note it's articulate but 'linear' — exact rather than holographic — which suits monitoring.
“its imaging is extremely precise, positioning sounds with pinpoint accuracy.”
MajorHiFi
“the imaging was excellent with a full and detailed overall sound.”
Tape Op
Detail
Strong consensus9 srcOne of the near-universal highlights — resolving, transparent and described as studio-grade, helped by low distortion and excellent channel matching. The honest caveat is at the very top: because the treble rolls off, some feel the uppermost detail and 'air' is blunted.
“Studio-grade resolution? Definitely.”
Headfonia
“Superb detail, clarity, and transient speed.”
Soundgale
Measured
RTINGS notes excellent stereo matching and low, inaudible harmonic distortion (which aids resolution), but also that the treble roll-off means 'some may find the top-end lacks detail or clarity' — so the resolution is high but the very top is gentle.
Classic planar speed: fast, clean transients and strong control are widely agreed. The caveat is power — the low sensitivity means it needs a real amp to open up its dynamics, despite the low impedance.
“Right out of the box, the LCD-S20 sounds fast. Very fast. Transients hit hard and clean”
Headfonia
“The speed of transients and the level of detail on these drivers are simply on another level.”
Soundgale
Measured
18 Ω but low 93 dB/1mW sensitivity: Audeze recommends >250 mW, and reviewers stress it 'craves power.' Underpowering it is behind a lot of the 'thin' impressions; from a strong source the slam and dynamics arrive.
The weight is the one fact nobody disputes — ~550 g is heavy. Whether that ruins the experience is what splits opinion: many find the suspension strap distributes it so well they forget it's on, while others find it fatiguing, with a narrow strap and limited headband adjustment that can leave it perched awkwardly.
Measured
About 550 g (PCMag: 'a hefty 1.21 pounds') — more than double a Sony MDR-7506's 220 g — on the Maxwell/MM-100 suspension strap, which several note has limited adjustment range. Clamp is modest, pad openings are on the small side, and the new magnetic pads are user-replaceable. Audio46, on a smaller head, said the weight 'made them fatiguing, and the loose fit made me feel like they would fall off.'
Where it splits
Comfortable — the weight is well-managed, even forgettable on the head.55%
“Although there may be some concern that these headphones are heavy, once they are on I almost forget that they are there.”
Tape Op
Too heavy / awkward fit — narrow strap, limited adjustment, pressure spots.45%
“The strap has a narrow footprint, meaning less surface area to spread the weight around and leading to pressure spots on the head.”
Fc-Construct, Headphones.com
A consistent strength: a premium magnesium/aluminum/steel frame that reviewers call rock-solid, plus Audeze's first detachable magnetic earpads. Minor gripes are the reduced cup swivel (not lay-flat), no balanced cable option, and no included case.
“You will not find any cheap plastics here. The LCD-S20 is built primarily from a solid mix of magnesium, aluminum, and spring steel”
Headfonics
“Build is solid, quite comfortable on the head and ears despite the smallish ear pad openings”
trellus (Head-Fi)
Measured
RTINGS rates the build above the rival FiiO FT1 and 'free of user complaints regarding the hinges.' The detachable magnetic pad system is new for Audeze; the cups tilt but don't lay flat, and there's no balanced cable or hard case in the box.
Isolation
Strong consensus9 srcThe standout and the strongest point of agreement. As a sealed planar it isolates unusually well for a passive headphone and leaks very little — reviewers rank it above its open Audeze siblings and among the best closed-backs they've used, which is exactly what its studio-tracking pitch needs.
“Passive isolation is quite good, noticeably better than my LCD-2 Closed Back and LCD-XC 2021 and it feels rather like I am shutting out the world”
trellus (Head-Fi)
“I thought the isolation was unbelievably good.”
Fc-Construct (Headphones.com forum)
Measured
Closed-back: PCMag lists 'Strong passive isolation' and notes it doesn't bleed much into mics; owners use it to track drums without leakage, and forum users rate its sealing 'next level' versus the Maxwell and older closed Audeze models.
At $499 most call it strong value — Audeze's most affordable passive closed-back and an accessible way into the brand's planar sound, with premium build to match. The dissent isn't about quality but positioning: one reviewer questions what problem it solves against cheaper studio classics, and you'll want to budget for an amp.
“these headphones are a super good value”
Tape Op
“it seems to me that the LCD-S20 was made to solve an already solved problem.”
Fc-Construct, Headphones.com
Measured
$499 — the first LCD-series model under $500 since the LCD-1. PCMag calls it 'competitively priced' for the studio market but flags it as 'Expensive,' and the low sensitivity means a proper amp is a near-requirement on top.
