Audio-Technica ATH-M40x vs Bose QuietComfort 25

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ATH-M40x compared with QuietComfort 25

	Audio-TechnicaATH-M40x	BoseQuietComfort 25
Overview
Released
Released	February 2014	September 2014
Sound
Type
Type	Over-ear	Over-ear
Noise cancelling
Noise cancelling	No	Yes
Driver size
Driver size	40 mm	–
Back
Back	Closed	Closed
Impedance
Impedance	35 ohms	–
Bluetooth codecs
Bluetooth codecs	None (wired)	None (wired)
Noise cancelling detail
Noise cancelling detail	–	Microphones inside and outside each earcup feed Bose's noise-cancelling processor; the right earcup has a power switch
Audio features
Audio features	–	Bose Active EQ and TriPort acoustic system; passive wired playback works with noise cancellation off or the battery removed
Drivers
Drivers	Dynamic, 40 mm with neodymium magnets and copper-clad aluminium wire voice coils; tuned flat; 15 – 24,000 Hz; sensitivity 98 dB; maximum input power 1,600 mW at 1 kHz	–
Battery
Listening time (maker's claim)
Listening time (maker's claim)	No battery (wired)	Up to 35 hours
Battery life detail
Battery life detail	–	Up to 35 hours of powered listening from one replaceable AAA cell
Design
Weight
Weight	240 g	–
Headphone cable
Headphone cable	Yes	Yes
Controls
Controls	–	Power switch on the right earcup; inline microphone and remote on the device-specific cable
Fit and ear tips
Fit and ear tips	Circumaural, closed-back; earcups swivel 90 degrees; collapsible	Around-ear protein-leather cushions, fabric-padded headband and folding earcups
Works with
Works with	Detachable 1.2 – 3.0 m coiled and 3.0 m straight cables with gold-plated 3.5 mm plugs; screw-on 6.3 mm adapter	Separate cable versions were sold for Apple devices and for selected Samsung Galaxy and Android devices
Colours
Colours	Black	Black or White, both with blue accents at launch
In the box
In the box	ATH-M40x headphones, two cables, screw-on 6.3 mm adapter, pouch	Headphones, carrying case, audio cable, airline adapter and AAA battery