Blackwire 3320 vs Momentum 4 Comparison

Compare Blackwire 3320 vs Momentum 4 side by side: specs, ratings, pros and cons, and which one fits your room best.

On this page
Poly Blackwire 3320
Blackwire 3320
Sennheiser Momentum 4 Wireless
Momentum 4

At a Glance

Blackwire 3320

The Poly Blackwire 3320 is a wired stereo on-ear headset. It has 32 mm speakers, a noise-cancelling boom mic that rotates 280°, and an inline control with a Teams button on the Teams version.

View on Poly (opens in a new tab)
Best For
Desk users
Style
On-ear stereo headband
Weight
131 g
ANC
None
Mics
1
Boom Mic
Yes (flexible boom, 280° rotation, 135 mm)
Talk Time
—
Connect
Wired USB-C with USB-A adapter
Certified
Microsoft Teams, Works With Chromebook
Momentum 4

The Sennheiser Momentum 4 Wireless is an over-ear headphone with 42 mm dynamic drivers, hybrid adaptive ANC and support for SBC, AAC, aptX and aptX Adaptive.

View on Sennheiser (opens in a new tab)
Best For
Long trips
Style
Over-ear (around-the-ear)
Weight
—
ANC
Hybrid adaptive ANC
Mics
4 (2 per side)
Boom Mic
No
Talk Time
60 h
Connect
—
Certified
—

Review Scores Compared

Expert Score

  • Blackwire 33208.2/10 Leads
  • Momentum 47.5/10

Voice & Mic Clarity

  • Blackwire 33207.1/10 Leads
  • Momentum 46.0/10

Comfort & Ergonomics

  • Blackwire 33209.3/10
  • Momentum 4—

Connectivity & Range

  • Blackwire 3320—
  • Momentum 48.5/10

Battery & Charging

  • Blackwire 3320—
  • Momentum 49.6/10

Certification & Controls

  • Blackwire 33208.6/10
  • Momentum 4—

Why Blackwire 3320 Beats Momentum 4 (and Vice Versa)

Why Blackwire 3320 beats Momentum 4

  • Better voice & mic clarity: 7.1 vs 6.0 out of 10
  • Frequency Response: 20 Hz - 20 kHz vs 6 Hz - 22 kHz
  • Microphone Setup: Noise-cancelling boom, 100 Hz - 10 kHz vs MEMS, 2 per side (beamforming)
  • Call Noise Reduction: Yes (noise-cancelling microphone) vs Beamforming
  • Boom Mic: Yes (flexible boom, 280° rotation, 135 mm) vs No

Why Momentum 4 beats Blackwire 3320

  • Driver Size: 42 mm vs 32 mm
  • Microphones: 4 (2 per side) vs 1
  • Mic Frequency Response: 50 Hz - 10 kHz vs 100 Hz - 10 kHz

Review-score leads of 0.5+ points out of 10 first, then specs where only one comes out ahead.

Full Specifications

General

Blackwire 3320Momentum 4
Best ForDesk usersLong trips
Wearing StyleOn-ear stereo headbandOver-ear (around-the-ear)

Design & Build

Blackwire 3320Momentum 4
Weight131 g—
Ear CushionsFoam—
ColorsBlackBlack, White, Graphite, Brown, Teal, Copper, Denim
Dimensions166 x 40 x 199 mm—

Audio

Blackwire 3320Momentum 4
Driver Size32 mm42 mm Better
Frequency Response20 Hz - 20 kHz Better6 Hz - 22 kHz
Bluetooth Codecs—SBC, AAC, aptX, aptX Adaptive
Driver Type—Dynamic
Impedance32 Ω470 Ω
Sensitivity—106 dB SPL (1 kHz / 0 dBFS)
Wired Listening—Yes (3.5 mm / 2.5 mm audio cable included)
Stereo / MonoStereoStereo
Speaker Bandwidth (Calls)20 Hz - 20 kHz—

Noise Cancelling

Blackwire 3320Momentum 4
Noise CancellingNoneHybrid adaptive ANC
Active Noise Cancelling—Yes
Adaptive ANC—Yes

Microphone

Blackwire 3320Momentum 4
Microphones14 (2 per side) Better
Microphone SetupNoise-cancelling boom, 100 Hz - 10 kHz BetterMEMS, 2 per side (beamforming)
Call Noise ReductionYes (noise-cancelling microphone) BetterBeamforming
Boom MicYes (flexible boom, 280° rotation, 135 mm) BetterNo
Mute ControlInline mute button—
Mic Frequency Response100 Hz - 10 kHz50 Hz - 10 kHz Better
Mic Pickup Pattern—2 mics per side, beamforming

Battery & Charging

Blackwire 3320Momentum 4
Talk Time—60 h
Charging Time—2 h
Fast Charging—Yes (5 min = up to 4 h)
Music Time—60 h
Charging Port—USB-C
Battery Capacity—700 mAh

Connectivity

Blackwire 3320Momentum 4
ConnectionWired USB-C with USB-A adapter—
Bluetooth Version—5.2
CertificationsMicrosoft Teams, Works With Chromebook—
Bluetooth Profiles—A2DP, AVRCP, HFP
USB AudioYes—
Cable Length2.18 m—

Controls & App

Blackwire 3320Momentum 4
ControlsInline: call answer/end, mute, volume, Teams button—
Management SoftwarePoly Lens—

In the Box

Blackwire 3320Momentum 4
In the BoxHeadset, USB-C to USB-A adapter, user guideHeadphones, carry case, USB-C cable, 3.5 mm / 2.5 mm audio cable, airplane adapter
Warranty2-year limited—
Carry Case—Yes (carry case)

Identifiers

Blackwire 3320Momentum 4
Model Number8X220AA—

Compatibility

Blackwire 3320Momentum 4
OS CompatibilityWindows 11, Windows 10, macOS, Android, iOS (USB-C)—

Takeaways

  • It's a tie on our rating (4/5) between Blackwire 3320 and Momentum 4, so choose on the rows that matter most to you.
  • Choose Blackwire 3320 for desk users.
  • Choose Momentum 4 for long trips.

Pros and Cons

Blackwire 3320

PROS

  • Noise-cancelling boom mic, 280° rotation
  • USB-C with USB-A adapter
  • Teams and Works With Chromebook certified
  • SoundGuard Digital

CONS

  • No ANC
  • Wired only

Momentum 4

PROS

  • Up to 60 h with ANC on
  • Hybrid adaptive ANC
  • aptX and aptX Adaptive support
  • 42 mm drivers

CONS

  • Weight and multipoint not listed on the spec page we checked
  • No LDAC

Similar Comparisons

Quick Verdict

  • Blackwire 3320 8.2Best overallLeads in Voice & Mic Clarity
  • Momentum 4 7.5No outright category lead