beyerdynamic DT 770 PRO vs Sony MDR-CD3000

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DT 770 PRO compared with MDR-CD3000

	beyerdynamicDT 770 PRO	SonyMDR-CD3000
Overview
Released
Released	1985	1991
Sound
Type
Type	Over-ear	Over-ear
Noise cancelling
Noise cancelling	No	No
Driver size
Driver size	–	50 mm
Back
Back	Closed	Closed
Impedance
Impedance	80 ohms	32 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 dome drivers with bio-cellulose diaphragms and neodymium magnets; 20 Hz – 20 kHz stated response; 104 dB/mW sensitivity; 1,000 mW power handling
Battery
Listening time (maker's claim)
Listening time (maker's claim)	No battery (wired)	No battery (wired)
Design
Weight
Weight	270 g (better)	400 g
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 cups with angled Aura-Nomic drivers, self-adjusting headband and collagen-composite floating-support ear pads, described in Sony's 2002 catalogue
Dimensions
Dimensions	–	Approximately 400 g without the cord, as specified in Sony's service manual
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 approximately 3 m 6N oxygen-free copper litz cable with gold-plated stereo two-way plug
In the box
In the box	–	Headphones, hard carrying case and UniMatch plug adaptor