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  1. Home
  2. Headphones
  3. Compare
  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Comfort
    3. Controls
    4. Breathability
    5. Portability
    6. Case
    7. Build Quality
    8. Stability
    9. Headshots 1
    10. Headshots 2
    11. Top
    12. In The Box
  5. Sound
    1. Sound Profile
    2. Frequency Response Consistency
    3. Raw Frequency Response
    4. Bass Accuracy
    5. Mid Accuracy
    6. Treble Accuracy
    7. Peaks/Dips
    8. Imaging
    9. Passive Soundstage
    10. Virtual Soundstage
    11. Weighted Harmonic Distortion
    12. Test Settings
  6. Isolation
    1. Noise Isolation
    2. Leakage
  7. Microphone
    1. Microphone Style
    2. Recording Quality
    3. Noise Handling
  8. Active Features
    1. Battery
    2. App Support
  9. Connectivity
    1. Wired Connection
    2. Bluetooth Connection
    3. Wireless Connection (Dongle)
    4. PC Compatibility
    5. PlayStation Compatibility
    6. Xbox Compatibility
    7. Base/Dock
  10. Comments

Sennheiser HD 650 vs Sennheiser HD 660S2

Side-by-Side Comparison

Products

Sennheiser HD 650
Sennheiser HD 660S2

Tested using Methodology v1.5

Updated Apr 02, 2024 10:53 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.6

Updated Jun 09, 2025 09:04 PM

SEE PRICE
Amazon.com
Sennheiser HD 650 Picture
Sennheiser HD 660S2 Picture
TypeOver-ear
EnclosureOpen-Back
WirelessNo
TransducerDynamic
Noise CancellingNo
MicNo
TypeOver-ear
EnclosureOpen-Back
WirelessNo
TransducerDynamic
Noise CancellingNo
MicNo

Variants

  • HD 650 (Gray)
  • HD 660S2 (Black)

Review

See Sennheiser HD 650 Review
See Sennheiser HD 660S2 Review
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Our Verdict

Sennheiser HD 650

Sennheiser HD 660S2

The Sennheiser HD 650 are slightly better audiophile headphones than the Sennheiser HD 660S2. The HD 650 are more comfortable and have a more neutral sound profile, which some users may prefer. Their passive soundstage is more immersive too. However, the HD 660S2 have more bass, which is good if you like more thumpy and rumbly genres.

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