By aspect — in detail
Isolation
Moderate · 6 srcClose to a clean sweep: reviewers across editorial, measurement and enthusiast outlets rate the active noise cancellation excellent for the price, with fine-grained adjustable levels. The one wrinkle is a lab nuance most subjective reviews miss, plus a minority who find the strongest setting physically uncomfortable rather than ineffective.
“Outstanding noise isolation performance.”
RTINGS
“Beats all other ANCs I have tested by miles”
audioreviews.org (Jürgen Kraus)
Measured
TechGearLab measured roughly 23-24 dB of low/mid-frequency reduction — above its test-fleet average — but its high-frequency reduction (about 34 dB) actually trailed the average it measured across the field (about 37 dB), a nuance the broad 'best ANC around' consensus glosses over. A minority (including on Reddit) describe the strongest setting as physically uncomfortable rather than ineffective.
Comfort
Strong consensus · 7 srcThe other pillar of agreement, and essentially uncontested: light, plush, gently clamped, and repeatedly singled out as among the most comfortable over-ears in the class — even the harshest critic of its sound still praised the fit.
“making these some of the most comfortable over-ears I've ever worn”
TechRadar (Becca Caddy)
“one of the coziest pairs of headphones”
TechGearLab (Genaveve Bradshaw)
Measured
TechGearLab measured 235 g with a gentle clamping force its panel wore for up to 10 hours straight; the main caveat across sources is a fit not secure enough for workouts or sudden head movement.
Tonality
Strong consensus · 6 srcBroad agreement on the shape, not the verdict: RTINGS' bench and every listening review agree this is a warm, bass-forward consumer voicing rather than a neutral one — essentially the QC45 with a DSP retune. Whether that tuning is a strength or a flaw is exactly where sources split (see bass and treble below).
“crisp, rich, and strikes a pleasing balance across frequencies”
TechRadar (Becca Caddy)
“warm and fleshed out with great depth and body”
TechGearLab (Genaveve Bradshaw)
Measured
RTINGS labels the signature 'Warm' with Bass Amount 'Very Emphasized (+5 dB)' against a 'Balanced (0 dB)' treble — an objective anchor for the bass-forward framing every reviewer describes.
Genuinely split, and TechGearLab's own panel put it best: this is a thumpy, bass-forward mix that some will love and some will hate. One camp hears it as over-emphasized and boomy out of the box, overshadowing the rest of the mix; the other hears the same elevated low end as punchy, deep and a genuine highlight of the tuning.
Measured
RTINGS measures the bass 'Very Emphasized' at roughly +5 dB; SoundGuys' own bench likewise finds the sub-bass sharply elevated over its preference curve. TechGearLab's panel summed up the trait directly: 'Some will love it and some will hate it.'
Where it splits
Over-emphasized and boomy out of the box — overshadows the rest of the mix.40%
“the sub-bass of the Bose QuietComfort Headphones is over-emphasized dramatically”
SoundGuys (Christian Thomas)
Punchy, deep and well-controlled — a genuine highlight of the tuning.60%
“produced electric reverberation that echoed smoothly with every strum”
Tom's Guide (Alex Bracetti)
Quietly well-regarded on its own terms — vocals and instruments come through natural and clear with good precision. The recurring caveat, echoed across measurement and editorial sources alike, is that the elevated bass can bleed into and mask the midrange on bass-light material.
“showcasing the headphones' sharp midrange”
Tom's Guide (Alex Bracetti)
“sounding natural with good clarity and clean precision”
TechGearLab (Genaveve Bradshaw)
Measured
SoundGuys and TechGearLab both note the bass emphasis can make mids feel comparatively 'weak' or overpowered on acoustic-leaning tracks, even though the midrange itself measures and sounds clean.
Contested along the same lines as bass, and for a related reason: SoundGuys' bench finds a specific peak in the 6-8 kHz range that it hears as disruptive to treble extension, while other reviewers — including one running comparable lab measurements — describe the same general region as crisp and detailed without ever turning harsh.
Measured
RTINGS measures overall treble as 'Balanced (0 dB)'; TechGearLab's own bench shows the highs sitting slightly above its target with 'occasional sibilance' that its panel still called crisp rather than harsh — the same general tilt SoundGuys hears as a disruptive peak.
⚠ vs. listeners — Two measurement-driven outlets both find an elevated treble region, but reach opposite subjective verdicts on how it sounds in practice.
Where it splits
A bright, uneven peak that leaves treble extension sounding off.28%
“the impression that music has poor treble extension”
SoundGuys (Christian Thomas)
Soundstage
Moderate · 2 srcLightly covered but consistent: reviewers who address it call the presentation reasonably spacious for a sealed wireless headphone, without describing it as especially immersive.
“the stage is well extended in all three dimensions”
audioreviews.org (Jürgen Kraus)
“almost spot on average in terms of soundstage”
TechGearLab (Genaveve Bradshaw)
Thin but genuinely split: one enthusiast review praises precise placement and layering, while a widely discussed critical Reddit post describes an odd, artificial-sounding separation between instruments that it found disorienting — a reaction another commenter in the same thread suggested could be a unit-specific channel imbalance rather than a trait of the model generally.
Where it splits
Precise placement with good separation and layering.54%
“imaging, separation, and layering of voices and instruments are good”
audioreviews.org (Jürgen Kraus)
Where it's discussed, resolution and clarity are seen as a plus rather than a weak point, with no opposing camp arguing the headphones sound blunted or veiled.
“I loved the vocal detailing most”
Tom's Guide (Alex Bracetti)
“Midrange clarity and transparency are very good.”
audioreviews.org (Jürgen Kraus)
A real disagreement: one lab-testing outlet calls the construction solid and a step up on rivals, while a separate measurement outlet's own scorecard and a widely upvoted owner complaint both describe it as middling-to-poor plastic for the price.
Measured
SoundGuys' own scorecard rates Durability/Build Quality 6.2 out of 10 — well below the same review's Comfort and Connectivity scores (9.0 each) — even though the prose review doesn't dwell on build issues.
Contested and price-dependent: at the $349-359 list price, critics call it a QC45 refresh that doesn't earn its premium; more favorable reviewers still call it a fair buy for the ANC-plus-comfort package. Nearly everyone — critics, fans, and owners alike — agrees it's a much easier recommendation once it goes on sale, which multiple sources note it does often.
Where it splits
A fair buy for the ANC-and-comfort package, especially on sale.54%
“a nice choice if you're looking to upgrade from the budget tier”
TechGearLab (Genaveve Bradshaw)
