Poly Blackwire 325 vs. Sennheiser HMDC 27

Headphones Comparison, Reviews and Tests

In depth comparison and review of Poly Blackwire 325 and Sennheiser HMDC 27. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.

Headphones Specifications Comparison

Poly Blackwire 325 vs. Sennheiser HMDC 27 Comparison Chart
DESIGN AND DIMENSIONS Poly Blackwire 325 Sennheiser HMDC 27
Product Type Headset - wired - USB, 3.5 mm jack Headset - wired
Series 300 Series -
Weight - 240 g
Headband Material Metal -
Recommended Use - Professional audio
SOUND QUALITY Poly Blackwire 325 Sennheiser HMDC 27
Headphones Form Factor On-ear Full size
Headphones Technology - Dynamic
Ear Cups Type - Closed
Connectivity Technology Wired Wired
Active Noise Cancelling - Yes Sennheiser HMDC 27 are equipped with active noice cancellation.
Sound Output Mode Stereo Stereo
Frequency Response 20 - 20000 Hz 8 - 18000 Hz Poly Blackwire 325 offer a larger frequency range than Sennheiser HMDC 27.
Total Harmonic Distortion (THD) - <0.1%
Max Sound Pressure - 128 dB
Features SoundGuard Technology -
In-Cord Volume Control Yes -
MICROPHONE Poly Blackwire 325 Sennheiser HMDC 27
Type Boom Boom
Microphone Technology - Dynamic
Microphone Operation Mode - Hypercardioid
Frequency Response 100 - 10000 Hz 40 - 18000 Hz Sennheiser HMDC 27 offer a larger microphone frequency range than Poly Blackwire 325.
REMOTE CONTROL Poly Blackwire 325 Sennheiser HMDC 27
Controls Mute, volume, answer/end -
CABLE Poly Blackwire 325 Sennheiser HMDC 27
Cable Type Headset cable - 2.13 m -
Cable Length 2.13 m -
FEATURES Poly Blackwire 325 Sennheiser HMDC 27
Features - EPOS ActiveGard
Additional Functions DSP -
CONNECTIONS Poly Blackwire 325 Sennheiser HMDC 27
Connector Type USB (4 PIN USB Type A)
Headphones (mini-phone 3.5 mm 4-pole)
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OTHERS Poly Blackwire 325 Sennheiser HMDC 27
Included Accessories - Wind screen, cable clip, headband padding
Service & Support Limited warranty - 2 years -
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