DT 900 PRO X

Released October 2021

The DT 900 PRO X are beyerdynamic's open-back studio headphones for monitoring, mixing and mastering, with STELLAR.45 drivers at 48 ohms that also suit phones, laptops and audio interfaces.

Type: Over-ear
Noise cancelling: No
Battery: –
With case: –
Best codec: Wired
Weight: 345 g

Over-ear

What reviewers say

Reviewers agree the DT 900 Pro X is superbly built and comfortable, with insightful, enjoyable sound that suits mixing and critical listening. What Hi-Fi? found it demanding of source equipment and recordings, SoundStage! Solo thinks similarly priced planar models offer more air for casual listening, and SoundGuys found it a little heavy.

From whathifi.com, musicradar.com, soundstagesolo.com and soundguys.com

Specifications

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Sound

Type: Over-ear
Noise cancelling: No
Driver size: 45 mm
Back: Open
Impedance: 48 ohms
Bluetooth codecs: None (wired)
Drivers: STELLAR.45 dynamic drivers (45 mm, Sound On Sound), made in Heilbronn, open; neodymium ring magnet, copper-clad voice coil wire, three-layer diaphragm; 5 – 40,000 Hz; 100 dB SPL (1 mW, 500 Hz), 114 dB SPL (1 V, 500 Hz); THD at 1 mW 0.80% at 100 Hz, 0.05% at 500 Hz, 0.04% at 1 kHz; max. input power 100 mW short-term, 30 mW continuous

Battery

Listening time (maker's claim): No battery (wired)

Design

Weight: 345 g
Headphone cable: Yes
Fit and ear tips: Circumaural, open-back; spring steel headband with memory foam pad; headband pressure 5.3 N; replaceable velour ear pads and headband pad
Works with: 3 m and 1.8 m straight cables, detachable, with a lockable 3-pin mini-XLR connector on one side; gold-plated 3.5 mm stereo jack with 6.35 mm adapter
Colours: Black
In the box: Headphones, 3 m straight cable, 1.8 m straight cable, 6.35 mm adapter, bag

Pros and cons

Pros

48-ohm STELLAR.45 drivers are loud enough from phones and laptops (114 dB SPL at 1 V)
Detachable mini-XLR cable, with 3 m and 1.8 m cables included
Replaceable velour ear pads and headband pad

Cons

Heavy at 345 g
Open back leaks sound and lets outside noise in
Soft bag rather than a hard case

Closest rivals

Model	Type	Noise cancelling	Battery	With case	Best codec	Weight	Released
AudezeLCD-5	Over-ear	No	–	–	Wired	420 g	Sept 2021
Dan Clark AudioAEON 2 Noire	Over-ear	No	–	–	Wired	345 g	Jan 2021
Dan Clark AudioSTEALTH	Over-ear	No	–	–	Wired	415 g	Aug 2021

Sources

Photo: api.beyerdynamic.de

DT 900 PRO X — earcup side view: api.beyerdynamic.de/media/catalog/product/b/e/beyerdynamic-dt-900-pro-x-side.png
DT 900 PRO X — front view: api.beyerdynamic.de/media/catalog/product/b/e/beyerdynamic-dt-900-pro-x-front_1…
DT 900 PRO X — earcup and detachable cable close-up: api.beyerdynamic.de/media/catalog/product/b/e/beyerdynamic-dt-900-pro-x-perspec…

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