Beyerdynamic DT 900 Pro X vs Sennheiser HD 660S2
Verdict: Beyerdynamic DT 900 Pro X wins on value and driveability with 48 Ω impedance versus 300 Ω on the HD 660S2 (per manufacturer specs). The Sennheiser offers lighter weight at 260 g and more refined mids (per Audio Science Review and RTINGS). DT 900 Pro X is the stronger pick for most users without a dedicated amp.
Winner: Beyerdynamic DT 900 Pro X
Beyerdynamic DT 900 Pro X: 8.2/10
Sennheiser HD 660S2: 8/10
Spec-by-spec comparison
| Beyerdynamic DT 900 Pro X | Sennheiser HD 660S2 | |
|---|---|---|
| Impedance | 48 Ω | 300 Ω |
| Driver Size | 48 mm | 40 mm |
| Frequency Response | 5 Hz - 40 kHz | 5 Hz - 41 kHz |
| Weight | 350 g | 260 g |
Beyerdynamic DT 900 Pro X
What works
- Low 48 Ω impedance allows easy drive from phones and interfaces
- Wide 5 Hz-40 kHz response with detailed treble
- Sturdy build with replaceable parts
What doesn't
- 350 g weight can cause fatigue over long sessions
- Bass is controlled but not as textured as higher-end models
Sennheiser HD 660S2
What works
- Smooth, musical midrange with excellent vocal timbre
- Light 260 g design for extended comfort
- Refined bass extension without boom
What doesn't
- 300 Ω impedance requires dedicated amplification
- Treble can roll off slightly compared to brighter options
Bottom line
Our pick: Beyerdynamic DT 900 Pro X.
People also ask
How does beyerdynamic dt 900 pro x vs hifiman sundara compare?
The Beyerdynamic DT 900 Pro X uses dynamic drivers with 48 ohm impedance while the HiFiMan Sundara employs planar magnetic drivers at 37 ohms. Both headphones are open-back designs priced near $300.
How does sennheiser hd 660s2 vs sony mdr-mv1 compare?
The Sennheiser HD 660S2 uses a 300-ohm open-back design while the Sony MDR-MV1 is a lower-impedance closed model. They differ in isolation and intended studio workflow.
How does beyerdynamic dt 900 pro x vs sennheiser hd 660s2 compare?
The Beyerdynamic DT 900 Pro X uses 48 ohm impedance while the Sennheiser HD 660S2 uses 300 ohms. The DT 900 Pro X typically sells for less and drives from portable sources without an amp.
How does beyerdynamic dt 1990 pro vs sennheiser hd 660s2 compare?
The Beyerdynamic DT 1990 Pro uses 250-ohm Tesla drivers while the Sennheiser HD 660S2 runs 300-ohm dynamic drivers. The DT 1990 Pro supplies brighter treble and higher output than the HD 660S2's smoother midrange balance.
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