Beyerdynamic DT 900 Pro X

Modern open-back with the STELLAR.45 driver and detachable cable - built for the next decade

Best for: Studio producers who want a modern open-back reference headphone that works without a dedicated amp

The DT 900 Pro X is an open-back studio headphone featuring beyerdynamic's proprietary STELLAR.45 driver - a 45mm three-layer transducer with an integrated damping layer. Frequency response runs 5 Hz to 40 kHz at 48 ohms, making it far more amplifier-friendly than the classic DT 990 Pro at 250 ohms. Two detachable cables with locking mini-XLR connectors are included. Also manufactured in Germany with fully replaceable components.

Key features

5 Hz - 40 kHz frequency response
Open-back, over-ear design - NOT for recording
45mm STELLAR.45 three-layer driver
48 ohm impedance - works without a dedicated amp
Two detachable cables with locking mini-XLR: 1.8m and 3m
Handcrafted in Germany with replaceable components

Our take

The DT 900 Pro X is what beyerdynamic built when they looked at the DT 990 Pro and said 'same concept, but fix the amp dependency and add a detachable cable.' The STELLAR.45 driver delivers a more controlled, neutral tuning than the classic V-shaped DT 990 Pro - less exaggerated highs, better balanced overall. The 48-ohm impedance means it drives cleanly from a Focusrite Scarlett or similar interface without a separate amp. If you need to monitor podcast audio for hours, this is the more comfortable long-term reference experience. The open-back design still means zero recording isolation - this is a mixing and reviewing tool, not a tracking headphone.