Sennheiser HD449 Wired Headphones vs Sennheiser MM550X Wireless Headphones

  • Sennheiser HD449 Wired Headphones were first released on 31st March 2012.
  • Sennheiser MM550X Wireless Headphones were first released on 2nd April 2012.
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Headphone Type
Connectivity
Microphone
No
Yes
Colour
Black
Black
Release date
31st March 2012
2nd April 2012
Model Number
HD449
MM550X
Cord Length (Metres)
1.4
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Bluetooth
No
Yes
Impedance (Ohms)
32
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Sensitivity (dB)
114
-
Frequency Response Range
16Hz-24,000Hz
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