Sony's WH-1000XM4 and WH-1000XM6 sit two generations apart, and the owner mentions for each tell a fairly consistent story even though the sample is thin — 19 mentions total across both models. The XM4 scores slightly higher overall on ClearPick (8.3 vs 8.0), largely on value, while the XM6 pulls ahead on the sound quality and noise cancellation subscores. Rather than assume a single upgrade narrative, this report reads the mentions by theme, since only one quote in the sample explicitly describes owning both generations.
Noise cancellation: the strength on both sides
Noise cancellation is the theme owners return to most for both headphones. XM4 mentions tagged 'ANC superiority' and 'ANC quality' describe strong performance in transit and travel — one r/headphones owner says they use the XM4 specifically for flights and yardwork over a competing pair, calling the ANC and audio quality the deciding factor. XM6 mentions echo the same theme without much hedging: one r/SonyHeadphones owner calls the noise cancellation 'next-level.' ClearPick's subscores track with the language — the XM4 sits at 90/100 for noise cancellation, the XM6 at 95/100 — a gap owners describe rather than contradict.
Sound quality and tuning
Sound quality mentions split slightly by generation. XM4 owners frequently bring up the in-app EQ as a way to correct the stock bass-forward tuning — 'this EQ genuinely unlocks the potential of these headphones' is typical — alongside one negative mention that the sound quality 'seems less nice now' relative to a newer pair. XM6 mentions lean positive without needing that caveat: one owner describes the bass as 'deeper and punchier' with vocals that stayed clear rather than muddy, and another simply calls the overall sound quality 'fantastic.' That matches the subscore gap — 85/100 for the XM4 against 90/100 for the XM6.
Comfort, fit, and durability
This is where the two models diverge most on complaints. XM4 owners raise two distinct issues: a crackling sound in one ear that one owner flags as 'a somewhat common issue based on threads in /r/sony,' and a fit complaint that the earcups 'don't fit larger ears well at all.' Neither complaint dominates the sample — of 13 XM4 mentions, 4 are negative and 1 is mixed — but both point at the same weak spot: ear shape and cup geometry rather than the headband itself. Against that, a different XM4 owner reports falling asleep for 5-6 hours of a 14-hour flight in them, which speaks to comfort for average ear shapes over long sessions. XM6 mentions on this theme are milder in both directions — the one comfort-adjacent quote notes using the XM4 through XM6 generations in hot, humid conditions 'without an issue yet,' a reassurance rather than an endorsement, and no XM6 mention in this sample raises a fit or crackling complaint at all.
Value against the price gap
Value mentions for the XM4 are unambiguous — 'honestly shocked at how cheap these are, this is a steal' captures the tone across its mention set. XM6 owners don't talk about price in isolation; they talk about it relative to the AirPods Max, which several treat as the real alternative at this price tier. One owner who returned AirPods Max for the XM6 calls them lighter and easier to travel with; another says the XM6 is 'still so much better than airpods max and the $800 cad they cost.' That framing matters for anyone weighing the ~$175 CAD XM4-to-XM6 gap: XM6 owners in this sample aren't defending the ~$549 CAD price against the XM4, they're defending it against pricier flagship alternatives.
What owners actually say
What buyers love
“honestly shocked at how cheap these are, this is a steal”
r/buildapcsales
“Comfortable enough that I fell asleep on a 14h flight with these on and had them on for 5-6 hours at least.”
r/buildapcsales
“i have used the xm3, 4, 5 and 6 in hot/humid climates where i sweat. definitely not workout sweat but enough. i haven't had an issue yet.”
r/SonyHeadphones
“The bass is deeper and punchier which I absolutely love. Vocals feel clearer too definitely not muddy, which was something I was worried about.”
r/SonyHeadphones
“honestly, they're amazing. The noise cancellation is next-level and the overall sound quality is fantastic.”
r/SonyHeadphones
Common complaints
Crackling sound in one ear
I had to return mine. There was a crackling sound in one ear... Seems to be a somewhat common issue based on threads in /r/sony.
r/buildapcsalesDoesn't fit larger ears well
I wanted to like these so bad but they are fairly shallow and don't fit larger ears well at all.
r/buildapcsalesOwner mentions for the WH-1000XM4 and WH-1000XM6 point to two headphones that both perform well at their respective price points rather than a strict old-model/new-model split. The XM4 draws praise for value and travel comfort but has isolated complaints about a crackling defect and tight fit for larger ears. The XM6 draws praise for sound and noise cancellation with no negative complaint pattern showing up in this mention sample, though the sample is small enough (6 mentions) that it shouldn't be read as a clean bill of health. Owners weighing the ~$175 CAD gap should note that XM6 owners in this data talk about the price relative to $800 CAD AirPods Max, not relative to the XM4 — suggesting the XM6's real competitive set in owner conversation is pricier flagships, not its own predecessor. Anyone prioritizing noise cancellation and sound over price should lean XM6; anyone anchored on value, with no fit or build issues on their current XM4, has little in this data pushing them to upgrade.