Hardwaresonyheadphonesbluetoothbattery
Sony's WH-1000XM6 Outlasts the WH-1000XM5 by Two Hours on Paper, but Only Over SBC; AAC and LDAC Listeners Get a Tie
Both models' help pages come from one manufacturer's tables, so these are maximums, and the new pair also gives up four hours of call time with the quiet settings on. A fourth codec joins the list, and the app shows which one your phone picked.
Sony’s battery number for the WH-1000XM6 arrives with a codec attached, and the codec decides whether it counts as news. With noise canceling on, the new headphones’ help page lists 30 hours of maximum music playback over AAC, 26 over LDAC and 30 over SBC. The XM5’s page lists 30, 26 and 28. Do the subtraction and one gap is left: two hours, on SBC.
Switch noise canceling and ambient sound off and the pattern repeats. The XM6 gets 36 hours over LDAC, 40 over AAC and 40 over SBC. The XM5 gets 36, 40 and 38. SBC picks up two hours again, and the other two codecs tie to the hour. If your phone talks to the headphones over AAC, Sony’s own tables show the successor adding nothing to your music time, which is a funny result for a successor.
The XM6’s table adds a row the XM5’s lacks. LC3 shows up at 30 hours with noise canceling on and 40 with it off. That makes four codecs on the new list, and three of the four land on the same pair of numbers. (Sony apparently ran out of ways to say 30.)
Call time moves the other way. For Bluetooth calls, the XM6 page gives 24 hours with noise canceling on, 24 with ambient sound on and 28 with both off. The XM5 page gives 24, 24 and 32. Four hours of talking vanished from the quiet setting, so the new pair hangs up early on the people who take long calls with everything switched off.
Wired listening comes out even. Both pages give 28 hours with the cable plugged in and noise canceling or ambient sound on, and 38 with both off. Fast charging also lines up: both promise about 3 hours of playback after 3 minutes on a USB PD adapter rated 9 V/2.3 A or more, and both say that figure holds at 77 to 95 degrees Fahrenheit and may vary with conditions.
Every number here is a ceiling. Both pages say real hours can differ with headset settings and usage, and both name what drains the battery: DSEE Extreme, Speak-to-Chat, the equalizer and Service Link. The XM5 page adds launching the voice assistant by voice. The XM6 page says changes to non-default modes in the Sony | Sound Connect app shorten battery life, and that stacking several shortens it more. These are manufacturer estimates, not measured endurance, and each page was written by the company selling the headphones.
Both pages also say the companion app can show which codec a connection is using. That is the one place the whole comparison gets settled, because the same headphones with the same charge get a different answer depending on how the phone connected.
Tied columns are cheap to print and hard to market, so expect more spec pages to look like this one. A single “up to 30 hours” line made sense when one codec did the work. With four codecs on a table and three of them tied, the headline figure mostly records which row the maker chose to headline. Comparisons of headphones against their predecessors will probably keep turning on the connection menu rather than the battery cell, since a codec is a software setting and costs the maker nothing to list.
Pack the charger anyway.