By aspect — in detail
Tonality
Contested · 7 srcEveryone agrees on the description — a warm, full-bodied, bass-lifted 'Focal house sound' that's not far from neutral apart from an elevated low end and a measured dip around 900 Hz — and then splits on the verdict. Mainstream and editorial reviewers hear it as natural, musical and largely balanced; critical listeners hear a colored, 'sweet' DSP-tinged voicing with scooped upper mids and timbre quirks that never quite settle, even with EQ. The split tracks casual vs critical listening and Bluetooth vs wired.
Measured
Headphones.com's GRAS 43AG read calls it "a pleasant and mostly balanced sound signature that's not too far from neutral with a hint of flare in a couple of places, and of course that midrange dip" — with "a little bit more mid-treble, and a little bit more bass" than target and "the dip at around 900hz" as its most significant feature.
Where it splits
A warm, natural, full-bodied Focal signature — musical and largely balanced, with just a hint of flare and that midrange dip.78%
“They have a natural and unsculpted sound profile, with exciting and expressive details across the frequency spectrum.”
TechGearLab (Genaveve Bradshaw)
A colored, 'sweet' DSP-tinged voicing — soft, bloomy bass and scooped upper mids, with timbre quirks that keep it from ever sounding fully 'right.'22%
“soft/bloomy bass and scooped upper mids”
Reddit r/headphones (critical review)
The most consistent praise below the sound-quality headline: an elevated, sub-bass-shelved low end that's punchy, textured and articulate rather than boomy, because the 200–300 Hz bloat region is kept in check. The only recurring caveat is that the shelf can be a touch much on some tracks — a couple of dB of app EQ is the common fix. Broad agreement it's a strength.
“The low-end reproduction is fantastic. They pack a punch when it's called for, but without sounding disproportionately boomy or blown out.”
TechGearLab (Genaveve Bradshaw)
“the shelf in the sub-bass regions can be a bit much at times”
Home Studio Basics (Stuart Charles)
Measured
Home Studio Basics measures roughly a 5 dB sub-bass shelf that gently slopes down, with the 200–300 Hz bloat region cut; Future Audiophile calls the stock tuning "pretty bass heavy" and dials in about −1 dB on the two lowest EQ bands. Elevated but controlled.
Generally judged natural and accurate — instruments and vocals come across with body and clarity even in busy mixes — with one recurring, measured caveat: a dip around 900 Hz that can leave the lower mids sounding a little recessed or hollow. Good, with an asterisk that shows up on the graph.
“The reproduction of these headphones in the midrange is accurate.”
TechGearLab (Genaveve Bradshaw)
“One somewhat large point of contention is the lower mids around 900Hz, which can sound recessed”
Home Studio Basics (Stuart Charles)
Measured
The ~900 Hz dip is independently flagged by both Headphones.com ("the dip at around 900hz" — its "most significant feature") and Home Studio Basics, a rare measured-and-subjective agreement.
Sources split, and it tracks how you listen. One camp hears a smooth, inoffensive top end — a little dark and short on air above ~10 kHz, but never harsh; the other hears it turn dirty, artificial and fatiguing, especially over the Bluetooth codec, where compression and hard Focal transients pile onto the treble peaks. Wired/USB-DAC narrows the gap.
Measured
Headphones.com's read shows a little extra mid-treble with limited air up top; TechGearLab rates the highs well ("the highs have titillating sparkles") but a step below the bass and mids. The codec dependence is the actionable part — the harshest reads are over aptX Bluetooth, not wired.
Where it splits
Smooth and largely inoffensive — a touch dark and light on top-end air, but not sibilant or fatiguing.58%
“I would say these are going to be somewhat dark-ish”
Home Studio Basics (Stuart Charles)
Dirty, artificial and fatiguing — the aptX codec and hard transients push the treble peaks, worst over Bluetooth.42%
“It sounds compressed, and treble is dirty (thanks to AptX codec).”
Reddit r/headphones (critical review)
Soundstage
Contested · 6 srcContested, and unusually so. One camp — including the outlets that measure and rank many rivals — calls the stage exceptionally wide for a closed wireless can, a genuine highlight. The other notes that Focal itself pitches these as about punch, not space: fine width but flat, front-less depth that stays very left-right. Both agree it won't touch a wired open-back.
Where it splits
Remarkably wide and spacious for a closed-back wireless headphone — a standout.62%
“the most expansive soundstage we've ever experienced in closed-back wireless headphones”
TechGearLab (Genaveve Bradshaw)
Not actually spacious — it's about impact, not openness; fine width but flat depth, and open-backs are the answer if space is the goal.38%
“you're probably better off looking for wired open-back headphones”
Headphones.com
Broadly a strength: instrument separation and placement are called precise and unmuddied, impressive for a Bluetooth closed-back. The dissent is narrow and about depth — one critical listener hears a flat, three-point image with little front-to-back layering. Placement good, depth the weak axis.
“The placement of instruments on the stage is rather excellent”
Home Studio Basics (Stuart Charles)
“they are very balanced in how they sound and therefore have great separation. Sound never gets muddy which is impressive for BT headphones”
Reddit r/headphones (owner)
“3-point imaging with very little depth”
Reddit r/headphones (critical review)
Strong for the class, with an honest ceiling. Reviewers are impressed by the resolution for a wireless ANC headphone — well beyond consumer cans — but agree it doesn't reach Focal's own wired flagships, and that the Bluetooth codec is what holds it back (USB-DAC/wired pulls more out). A relative strength that stops short of true high-end.
“neutral yet extremely detailed sound profile”
TechGearLab (Genaveve Bradshaw)
“they are still not on par with a Utopia or even a Clear MG in the all-important resolution department”
Home Studio Basics (Stuart Charles)
Measured
Headphones.com frames it as "an audiophile-level USB ANC headphone, with the ability to go wireless" — i.e. the resolution is best over USB-DAC/wired, and Bluetooth adds compression.
Focal's calling card carries over: reviewers praise the punch, slam and sense of impact — part of why the sound is called exciting. The caveat is codec-shaped: over Bluetooth the compression flattens dynamic range for critical listeners, so the effortless slam is most obvious wired. Strong, source-dependent.
“it's more about punch and dynamism than it is about spaciousness and soundstage”
Headphones.com
“It sounds up-front and strong, with less dynamic range.”
Reddit r/headphones (critical review)
Measured
Headphones.com credits the Bathys with bringing "a decent sense of impact, and technical prowess to the ANC space"; the recurring critical note is that aptX Bluetooth compresses that dynamic range relative to the USB-DAC/wired path.
The clearest physical split, and it's about weight. At ~350–359 g the Bathys is roughly 100 g heavier than a Sony XM5, with a firm clamp. One camp finds the plush leather pads and even pressure genuinely comfortable for long sessions; the other finds the mass builds head/neck pressure and digs into the crown within a few hours. Pad quality is praised by nearly everyone; the weight is the deciding variable.
Measured
TechGearLab measures 359 g — "among the heaviest in the group" and about 100 g over most rivals — with 61×47 mm ear cups, and scores comfort just 4.2/10; Headphones.com calls the pads "some of the nicest feeling pads on any headphone I've come across" while noting the bulk and clamp.
Where it splits
Comfortable for long sessions — plush pads, even pressure, above-average despite a snug clamp.74%
“comfort overall is certainly above average”
Home Studio Basics (Stuart Charles)
Too heavy — at ~359 g the mass builds pressure and the headband digs into the top of your head after a few hours.26%
“these headphones feel like a neck workout. After 3 hours, the headband began to dig into the top of our heads.”
TechGearLab (Genaveve Bradshaw)
Isolation
Contested · 7 srcThe marquee disagreement. Some reviewers and owners call the three-mode ANC excellent — quiet enough for anything; others, including the outlet that measures it, call it disappointing and clearly behind the Sony/Bose/Apple class leaders, especially against low-frequency drone (planes, trains). The measurements side with the skeptics: mid-pack attenuation, weakest exactly where travel noise lives. A faint noise-floor whine also turns up on some units.
Measured
TechGearLab measures ANC reduction of 21.2 / 20.7 / 39.2 dB (low/mid/high) against a class best of 26.6 / 26.6 / 46.7 — mid-pack, and weakest in the bass where drone lives — and "wouldn't recommend them for things like airplane or subway travel." Headphones.com concurs it's "definitely still behind the class leaders in the ANC headphone space," while finding it competent and hiss-free on its unit. The louder background whine some owners report appears to be unit-to-unit variation.
Where it splits
Genuinely good-to-excellent ANC — plenty quiet for offices, homes and flights, and impressive without causing fatigue.44%
“While we’re on the subject, ANC here is very good.”
Home Studio Basics (Stuart Charles)
Middling by class standards — clearly behind Sony, Bose and Apple, weak on low-frequency rumble, and not the pick for planes or subways.56%
“The Bathys noise cancellation is a bit disappointing.”
TechGearLab (Genaveve Bradshaw)
Near-universal praise for the materials and design — aluminium headband, magnesium yokes, real leather and a lit Focal logo add up to one of the best-built, best-looking wireless headphones made. The consistent knocks are specific rather than structural: the on-board buttons and the power/DAC switch feel cheap and plasticky for the price, and a minority of units develop a faint noise-floor whine. Gorgeous, with a couple of cost-cut touches.
“Gorgeous and solidly built”
What Hi-Fi?
“The metal work and leather on the Focal Bathys is just gorgeous”
Future Audiophile (Jerry Del Colliano)
“Plasticky buttons”
What Hi-Fi?
Measured
Predominantly aluminium/magnesium/leather with plastic cups and buttons; ear cups fold flat but don't collapse inward. What Hi-Fi's lone con is the "plasticky" buttons; the earliest units had a squealing-driver batch Focal has since addressed, and a quiet noise-floor whine still surfaces on some units — a QC/unit-variation caveat rather than a universal fault.
Argued at every price. One camp says it's priced accordingly for what it is — the best-sounding wireless ANC headphone, with a real USB-DAC and Focal build, that even holds resale value. The other says $700–800 is too much for a headphone with mid-pack ANC and heavy weight, and that it only makes sense on discount (owners repeatedly cite ~$450–$599 as the sweet spot). The sound is not in dispute; whether it's worth flagship money is.
Measured
Launched around $799 and typically ~$699 street since; TechGearLab's cons are "Expensive" and "Poor noise-cancellation," and reviewers/owners repeatedly land on ~$450–$599 as the price at which the value case turns convincing.
Where it splits
Worth it — priced accordingly for class-leading wireless sound, a genuine USB-DAC and made-in-France build.45%
“highly recommendable for anyone after the convenience of portability in a premium pair of headphones at this price”
What Hi-Fi?
Overpriced at full retail — great sound, but a deal only near ~$499 or on discount, not at $700–800.55%
“How about $499? I think that’s a better price”
Home Studio Basics (Stuart Charles)
