Bose QuietComfort 2 vs Sennheiser HD 280 PRO

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QuietComfort 2 compared with HD 280 PRO

	BoseQuietComfort 2	SennheiserHD 280 PRO
Overview
Released
Released	2003	2003
Sound
Type
Type	Over-ear	Over-ear
Noise cancelling
Noise cancelling	Yes	No
Back
Back	Closed	Closed
Impedance
Impedance	–	64 ohms
Bluetooth codecs
Bluetooth codecs	None (wired)	None (wired)
Drivers
Drivers	–	Dynamic, closed; 8 Hz – 25 kHz; 113 dB SPL; THD 0.1%
Noise cancelling detail
Noise cancelling detail	Noise cancellation works with the audio cable detached; the power switch is on the right earcup	–
Battery
Listening time (maker's claim)
Listening time (maker's claim)	Up to 35 hours	No battery (wired)
Battery life detail
Battery life detail	The 2003 Bose guide states about 35 hours from one AAA alkaline cell; a later Bose guide for a revised QC2 states about 40 hours	–
Design
Weight
Weight	–	285 g
Headphone cable
Headphone cable	Yes	Yes
Controls
Controls	Power switch on the right earcup; Hi/Lo level switch on the cable connector	–
Fit and ear tips
Fit and ear tips	Around-ear cushions and rotating earcups that fold flat into a case	Circumaural (over-ear), closed-back; contact pressure 6 N; ambient noise attenuation up to 32 dB; soft replaceable ear pads; collapsible design with rotating ear cups; polycarbonate construction
Works with
Works with	Detachable wired audio cable with 3.5 mm source plug; dual 3.5 mm airline adapter and 6.3 mm stereo adapter described in the guide	Single-sided coiled cable (1.3 m to 3 m) with 3.5 mm jack plug; 6.3 mm adapter
In the box
In the box	–	HD 280 PRO headphones, 3.5 mm to 6.3 mm jack plug adapter, safety guide