Audio-Technica ATH-ADX3000 vs Bose QuietComfort Ultra Headphones

Audio-Technica ATH-ADX3000

Audio-Technica

A featherweight, hyper-detailed open-back — for treble lovers

Bose QuietComfort Ultra Headphones

Bose

8.4

Excellent

Audio-Technica ATH-ADX3000

What Reviewers Agree On

Exceptionally light at roughly 257g, with a 3D wing-support headband that makes the headphones effectively disappear during long listening sessions
Class-leading detail retrieval, resolution and clarity for a $999 dynamic-driver open-back — reviewers say it goes toe-to-toe with pricier planar headphones
Premium build quality despite the low weight, with a refined open-air design and replaceable plush velour ear pads
A genuinely open, airy presentation with good instrument separation and a coherent, holographic soundstage
Strong value at the $999 price for buyers who want technical, audiophile-grade performance from an easy-to-style headphone

Deal Breakers

Pros & Cons

Audio-Technica ATH-ADX3000

Pros

Exceptionally light at roughly 257g, with a 3D wing-support headband that makes the headphones effectively disappear during long listening sessions
Class-leading detail retrieval, resolution and clarity for a $999 dynamic-driver open-back — reviewers say it goes toe-to-toe with pricier planar headphones
Premium build quality despite the low weight, with a refined open-air design and replaceable plush velour ear pads
A genuinely open, airy presentation with good instrument separation and a coherent, holographic soundstage

Detailed Comparison

Sound Quality

Audio-Technica ATH-ADX3000

The ADX3000 is built around a 58mm dynamic driver and tuned bright and detail-forward. Reviewers consistently praise its resolution, clarity and dynamic punch, but the lively treble — with a sharp peak near 4 kHz — divides opinion, and sub-bass rolls off for those who want low-end slam.

Delivers resolution, clarity and technical performance that reviewers say is incredible for the price — the only dynamic-driver headphone in this range that can go toe-to-toe with pricier planars like the HiFiMan Arya Organic.
Tuned bright and hyper-focused with an emphasis on the upper mids and lower treble — human voices, violins, pianos and acoustic guitars sound more lifelike, though the treble peak makes the overall tonal balance a little wonky.
There is a sharp peak right around 4 kHz; on a 10-band EQ you can pick the 4 kHz band and drop it by 4-5 dB to tame the brightness as a starting point.

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Bright, treble-forward tuning with a sharp peak near 4 kHz that can sound harsh or fatiguing, especially for treble-sensitive listeners

Sub-bass rolls off below roughly 50-60 Hz — bass-focused listeners will find it lacks visceral low-end slam without EQ

Purely passive and wired — no Bluetooth, no ANC, no microphone and no battery, so it is unsuitable for commuting, calls or travel

Uses a proprietary A2DC connector and ships with a mediocre stock cable, so cable upgrades mean buying into a less-common termination

Bose QuietComfort Ultra Headphones

What Reviewers Agree On

Noise cancellation is best-in-class — marginally better than Sony XM5
Immersive Audio spatial sound is surprisingly convincing and enjoyable
Comfort is excellent for long listening sessions
Build quality and premium materials feel worth the price
Call quality is very good with clear voice isolation

Deal Breakers

Battery drops from 24 to 18 hours with Immersive Audio enabled
No multipoint connection out of the box (added later via update)
Heavier than QC45 — noticeable during long sessions

Strong value at the $999 price for buyers who want technical, audiophile-grade performance from an easy-to-style headphone

Cons

Bright, treble-forward tuning with a sharp peak near 4 kHz that can sound harsh or fatiguing, especially for treble-sensitive listeners
Sub-bass rolls off below roughly 50-60 Hz — bass-focused listeners will find it lacks visceral low-end slam without EQ
Purely passive and wired — no Bluetooth, no ANC, no microphone and no battery, so it is unsuitable for commuting, calls or travel
Uses a proprietary A2DC connector and ships with a mediocre stock cable, so cable upgrades mean buying into a less-common termination

Bose QuietComfort Ultra Headphones

Pros

Noise cancellation is best-in-class — marginally better than Sony XM5
Immersive Audio spatial sound is surprisingly convincing and enjoyable
Comfort is excellent for long listening sessions
Build quality and premium materials feel worth the price
Call quality is very good with clear voice isolation

Cons

Battery drops from 24 to 18 hours with Immersive Audio enabled
No multipoint connection out of the box (added later via update)
Heavier than QC45 — noticeable during long sessions

Bass extends down with a W-shaped lift around 100 Hz and the sub-bass is described as quite nice, but it is not as visceral or punchy as the pricier ADX7000 or Caldera Open.

Bass distortion was not something this reviewer could provoke even as a bass-heavy listener — the driver stays clean under pressure.

Soundstage is open and airy with good left-to-right separation, but it does not feel huge — instruments revolve around you rather than spreading out wide, and it does not match the Focal Utopia.

The relaxed mid-range followed by a more forward treble makes the presentation clinical and superb for detail retrieval, but that treble energy can become fatiguing over long sessions depending on how you listen.

Treble-sensitive listeners report the top end is spicy and present, with clarity and extension — noticeable but not enough to cause ear discomfort the way some bright headphones do.

Reviewers report the drivers benefit from roughly 100 hours of mechanical break-in, after which the treble peak and midrange prominence chill out and more sub-bass impact comes through.

Bose QuietComfort Ultra Headphones

Rich, warm sound signature that most listeners will enjoy, though audiophiles may want more neutrality.

The sound is warm, rich, and engaging — Bose has clearly invested in tuning these for mainstream appeal.
Immersive Audio is genuinely impressive for movies and spatial music mixes, but it's a battery hog.

Comfort & Design

Audio-Technica ATH-ADX3000

The ADX3000's headline trait is its weight — around 257g makes it one of the lightest premium open-backs available. A 3D wing-support headband, plush velour pads and a low-but-firm initial clamp combine into a fit reviewers say quickly disappears.

Crazy light at 257g — a paperweight compared with most headphones in its class — and that lightness is a major comfort advantage for long sessions.
Audio-Technica navigated the usual lightweight trade-off well — it stays very lightweight and comfortable yet still feels and looks extremely premium.
The 3D wing-support system plus plush velour pads mean the padding mostly touches the skull rather than clamping, which helps avoid headphone fatigue and makes it easy to forget the headphones are on.
Measured clamp force is around 600-750g — it can feel a little firm the moment you put it on, but the combination of weight, soft pads and clamp means it very quickly becomes one of the least intrusive headphones this reviewer has worn.
One reviewer found this the least comfortable of the headphones in a comparison group, a reminder that fit is head-shape dependent despite the low weight.
Build quality is high-end — reviewers describe super high-end quality and build, with a simple black open-back-with-mesh-grille aesthetic rather than flashy luxury materials.
Left/right channel markings on the cups are small and easy to miss, and the stock cable carries no side marking — a minor everyday annoyance.

Bose QuietComfort Ultra Headphones

Premium build and excellent comfort, though slightly heavier than the previous generation.

These are incredibly comfortable for multi-hour listening sessions — the protein leather earpads are plush.
They're noticeably heavier than the QC45 — I felt it after 3+ hours of continuous wear.