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Bose QuietComfort 35 II vs Sony MDR-1000X

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

BoseQuietComfort 35 IISonyMDR-1000X
Overview
ReleasedSeptember 2017September 2016
Sound
TypeOver-earOver-ear
Noise cancellingYesYes
Transparency mode–Yes
Driver size–40 mm
Back–Closed
Bluetooth codecsSBC and AACSBC, AAC, aptX and LDAC
Drivers–40 mm dome-type drivers with aluminium-coated liquid crystal polymer diaphragms, CCAW voice coils and neodymium magnets; 4 Hz to 40 kHz wired frequency response; 46 ohms powered on or 14 ohms off at 1 kHz
Noise cancelling detailHigh, Low and Off settings in the Bose Connect app or via the Action button; defaults to High on power-up; no dedicated transparency mode described in the maker's guideSense Engine with dual noise sensors and a Personal NC Optimiser; Ambient Sound Mode offers Normal and Voice settings, and Quick Attention passes outside sound through while a hand covers the right earcup
Audio featuresNo custom equaliser in Bose Connect (SoundGuys); SBC and AAC codecs confirmed by SoundGuysLDAC, aptX, AAC and SBC over Bluetooth; DSEE HX upscaling and S-Master HX amplification; NFC pairing
Battery
Listening time (maker's claim)Up to 20 hoursUp to 20 hours
Battery life detailUp to 20 hours wirelessly or 40 hours using the supplied audio cable; headphones do not play while charging; analogue listening remains possible with a depleted batteryUp to 20 hours with noise cancelling on or 22 hours off; up to 24 hours of talk time with noise cancelling on; full charge in about four hours
Fast chargingFull charge in up to two hours (current owner's guide); What Hi-Fi reports 15 minutes provides 2.5 hours of wireless listening–
Design
Weight–275 g
Bluetooth4.14.1
Two devices at onceYes–
Headphone cableYesYes
ControlsPower/Bluetooth slider, volume buttons and multi-function button on the right earcup; left Action button can control noise cancellation; multi-function button accesses the phone's voice controlRight earcup touch panel for playback, calls and volume; separate power, noise cancelling and ambient-sound buttons
MicrophonesBuilt-in microphone system for calls and voice assistants; maker's launch announcement describes voice pickup but does not publish a microphone countOmnidirectional electret condenser microphone with a 100 Hz to 8 kHz frequency range
Fit and ear tipsAround-ear cushions; headband folds and earcups rotate for the supplied carry caseCircumaural ear cushions; swivelling earcups fold into the supplied carrying case
DimensionsSoundGuys reports 235.3 g and 180 × 170 × 81 mm; What Hi-Fi's table gives 240 g; no current maker headphone weight was verified, so the main weight field is left out–
Water resistance detailNo IP rating verified in the maker documents used; owner's guide says not to use near water–
Works withBose Connect app for iOS and Android; two active Bluetooth devices, one audio stream at a time, with eight stored pairings; NFC pairing; SimpleSync with compatible Bose speakers and soundbars; Bluetooth 4.1 confirmed by TechRadar; Google Assistant is not available on iOS according to Bose's current article; current maker product page also lists Amazon Alexa, subject to country and language availabilityBluetooth A2DP, AVRCP, HFP and HSP; 3.5 mm detachable cable allows listening with the headphones switched off; Micro-USB charges the battery
ColoursBlack and Silver at launchBlack, Grey Beige
In the boxHeadphones, carry case, USB charging cable and analogue audio cable; micro-USB charging connector; 2.5 mm headphone to 3.5 mm device audio cable (TechRadar)Headphones, carrying case, 1.5 m headphone cable, Micro-USB cable and in-flight plug adaptor

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