beyerdynamic DT 770 PRO X Limited Edition vs Sennheiser HD 620S

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DT 770 PRO X Limited Edition compared with HD 620S

	beyerdynamicDT 770 PRO X Limited Edition	SennheiserHD 620S
Overview
Released
Released	April 2024	June 2024
Sound
Type
Type	Over-ear	Over-ear
Noise cancelling
Noise cancelling	No	No
Driver size
Driver size	45 mm	38 mm
Back
Back	Closed	Closed
Impedance
Impedance	48 ohms	150 ohms
Bluetooth codecs
Bluetooth codecs	None (wired)	None (wired)
Drivers
Drivers	STELLAR.45 dynamic driver (the same system as the DT 700 PRO X and DT 900 PRO X, per beyerdynamic; 45 mm, Sound On Sound), closed; 5 – 40,000 Hz; 98 dB SPL (1 mW, 500 Hz), 112 dB SPL (1 V, 500 Hz); THD < 0.05% at 500 Hz; max. short-term power handling 210 mW	Dynamic, closed; 42 mm angled transducers with 38 mm diaphragm and 150-ohm aluminium voice coil, made in Tullamore, Ireland; 6 Hz – 30 kHz; 110 dB SPL (1 Vrms); THD < 0.05% (1 kHz, 90 dB SPL); steel plate closing off the back volume
Noise cancelling detail
Noise cancelling detail	No active noise cancelling; passive isolation 16 dBA	–
Battery
Listening time (maker's claim)
Listening time (maker's claim)	No battery (wired)	No battery (wired)
Design
Weight
Weight	305 g (better)	326 g
Headphone cable
Headphone cable	Yes	Yes
Fit and ear tips
Fit and ear tips	Over-ear, closed-back; spring steel headband with fontanelle recess; nominal headband pressure 5.5 N; replaceable velour ear pads and headband pad	Over-ear (around the ear), closed-back; artificial leather ear pads with internal venting; steel-reinforced headband sliders and ear cup covers; weight 326 g without cable, from Headfonics (Sennheiser doesn't publish it)
Works with
Works with	3 m straight cable, detachable, with a lockable 3-pin mini-XLR connector on one side; gold-plated 3.5 mm stereo jack with screw-on 6.35 mm adapter	Detachable 1.8 m twist-lock cable with 3.5 mm plug and locking screw; screw-on 3.5 mm to 6.3 mm adapter; optional balanced 4.4 mm cable
In the box
In the box	Headphones, 3 m straight cable, screw-on 3.5 mm to 6.35 mm adapter, drawstring bag	HD 620S headphones, 1.8 m cable with 3.5 mm plug, 3.5 to 6.3 mm adapter; the launch press release also lists a storage pouch