beyerdynamic DT 770 PRO vs Sony MDR-7506

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DT 770 PRO compared with MDR-7506

	beyerdynamicDT 770 PRO	SonyMDR-7506
Overview
Released
Released	1985	1991
Sound
Type
Type	Over-ear	Over-ear
Noise cancelling
Noise cancelling	No	No
Driver size
Driver size	–	40 mm
Back
Back	Closed	Closed
Impedance
Impedance	80 ohms	63 ohms
Bluetooth codecs
Bluetooth codecs	None (wired)	None (wired)
Drivers
Drivers	Dynamic, closed, with bass reflex system; 5 – 35,000 Hz; nominal sound pressure level 96 dB; 32, 80 or 250 ohms	Dynamic, 40 mm dome-type; 10 – 20,000 Hz; 106 dB/mW; maximum input 1,000 mW (IEC)
Battery
Listening time (maker's claim)
Listening time (maker's claim)	No battery (wired)	No battery (wired)
Design
Weight
Weight	270 g	230 g (better)
Headphone cable
Headphone cable	Yes	Yes
Fit and ear tips
Fit and ear tips	Circumaural, closed-back; replaceable ear pads (black leatherette on the 32-ohm version, silver-grey velour on the 80 and 250-ohm versions); headband pressure approx. 3.5 – 5.5 N	Circumaural, closed-back; folds; click-scale headband sliders
Works with
Works with	3.5 mm plug with 6.35 mm adapter; 1.6 m straight cable (32 ohms), 3 m straight cable (80 ohms) or 3 m coiled cable (250 ohms)	Fixed coiled cable, about 1.2 m (about 3 m extended), with a gold-plated two-way stereo plug (3.5 mm and 6.3 mm)
Colours
Colours	–	Black
In the box
In the box	–	MDR-7506 headphones, carrying pouch