Speak2 55 vs Sync 40 Comparison

Compare Speak2 55 vs Sync 40 side by side: specs, ratings, pros and cons, and which one fits your room best.

On this page
Jabra Speak2 55
Speak2 55
Editor's pick
Poly Sync 40
Sync 40

At a Glance

Speak2 55

The Jabra Speak2 55 is a smaller sibling of the Speak2 75. It has four microphones, a 50 mm speaker, full-duplex audio and a 2.3 m pickup range.

View on Jabra (opens in a new tab)
Best For
Desk calls
Mics
4
Pickup
2.3 m
Talk Time
12 h
BT
5.1
Certified
Microsoft Teams, Google Meet, Amazon Chime
Sync 40

The Poly Sync 40 is a speakerphone for huddle rooms up to about 5 x 5 m. It has three mics, a 50 mm speaker, a 2.5 m pickup range and two status light bars visible from any side.

View on Poly (opens in a new tab)
Best For
Huddle rooms
Mics
3
Pickup
2.5 m
Talk Time
30 h
BT
5.1
Certified
Microsoft Teams (Teams model), Zoom

Review Scores Compared

Expert Score

  • Speak2 558.2/10
  • Sync 408.6/10 Leads

Mic Array & Full-Duplex

  • Speak2 558.4/10 Leads
  • Sync 408.1/10

Speaker Clarity & Volume

  • Speak2 558.8/10
  • Sync 409.2/10 Leads

Connectivity & Daisy-Chaining

  • Speak2 556.2/10
  • Sync 408.0/10 Leads

Portability & Power

  • Speak2 558.4/10
  • Sync 409.1/10 Leads

Call Controls & Certifications

  • Speak2 559.5/10
  • Sync 409.8/10 Leads

Why Speak2 55 Beats Sync 40 (and Vice Versa)

Why Speak2 55 beats Sync 40

  • Microphones: 4 vs 3
  • Mic Frequency Range: 150 Hz - 7,000 Hz (wideband) vs 100 Hz - 6.7 kHz
  • Charging Time: 2.5 h vs 5 h
  • Weight: 280 g vs 610 g

Why Sync 40 beats Speak2 55

  • Better connectivity & daisy-chaining: 8.0 vs 6.2 out of 10
  • Better portability & power: 9.1 vs 8.4 out of 10
  • Pickup Range: 2.5 m vs 2.3 m
  • Max Output: 89 dB SPL (nominal) vs 85 dB SPL @ 0.5 m
  • Speaker Frequency Range: 75 Hz - 20 kHz vs 100 Hz - 20,000 Hz (music), 150 Hz - 7,000 Hz (speech)
  • Talk Time: 30 h vs 12 h

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

Full Specifications

General

Speak2 55Sync 40
Best ForDesk callsHuddle rooms
Ideal Room SizeUp to 4.5 x 4.5 m (14.76 x 14.76 ft)Up to 5 x 5 m
Form FactorPuckBar

Microphones

Speak2 55Sync 40
Microphones4 Better3
Pickup Range2.3 m2.5 m Better
Mic Frequency Range150 Hz - 7,000 Hz (wideband) Better100 Hz - 6.7 kHz
Full DuplexYesYes
Echo CancellationYesYes
Noise ReductionYesYes
Mic TypeDigital MEMS3-mic steerable array
Audio BandwidthWideband (up to 8 kHz)—
Automatic Gain ControlYes (outgoing audio)—

Speaker

Speak2 55Sync 40
Speaker50 mm full-range50 mm
Max Output85 dB SPL @ 0.5 m89 dB SPL (nominal) Better
Speaker Frequency Range100 Hz - 20,000 Hz (music), 150 Hz - 7,000 Hz (speech)75 Hz - 20 kHz Better
Speaker Drivers11
Music PlaybackYes—

Battery & Charging

Speak2 55Sync 40
Talk Time12 h30 h Better
BatteryLi-ion, 2 x 900 mAhLi-ion, 5000 mAh
Charging Time2.5 h Better5 h
Battery Capacity1800 mAh—
Charging PortIntegrated USB-C cable—
Mains PoweredNoNo

Connectivity

Speak2 55Sync 40
ConnectionUSB-C, USB-A, Bluetooth (phone/tablet only)USB-A, USB-C, Bluetooth
Bluetooth Version5.15.1
USB DongleNoNo (Sync 40+ includes BT600)
Link Two UnitsNoYes (two units, wireless) Better
CertificationsMicrosoft Teams, Google Meet, Amazon ChimeMicrosoft Teams (Teams model), Zoom
USB ConnectorIntegrated USB-C cable with USB-A adapter—
Cable Length0.8 m1.05 m Better
Bluetooth Range30 m30 m
Multiple SourcesYes (2 simultaneous, 8 paired)—
Bluetooth ProfilesA2DP, AVRCP, BLE, HFPA2DP, AVRCP, HFP, HSP, BLE

Design & Build

Speak2 55Sync 40
Weight280 g Better610 g
Dimensions120 x 33 mm (diameter x height)38 x 102 x 273 mm
Dust/Water RatingIP64IP64
Colors—Silver
Controls—Touch: call answer/end, mute, volume, programmable button, pairing; buttons: power, wireless daisy chain
Management SoftwareJabra Direct, Jabra Xpress—
Mute Button—Yes
Carry CaseYes (carry pouch)—
IT Remote ManagementJabra Xpress—

In the Box

Speak2 55Sync 40
In the BoxSpeakerphone, carry pouchSpeakerphone, USB-A cable, USB-C cable, quick start guide
Warranty2 years2 years

Identifiers

Speak2 55Sync 40
Model Number—772C4AA

Compatibility

Speak2 55Sync 40
OS Compatibility—Windows 11, Windows 10, macOS
Plug and PlayYes—

Takeaways

  • Our pick: Sync 40, with the highest spec-based rating (4.5/5).
  • Choose Speak2 55 for desk calls.
  • Choose Sync 40 for huddle rooms.

Pros and Cons

Speak2 55

PROS

  • Four mics with full duplex
  • IP64
  • Light at 280 g
  • Teams and Google Meet certified

CONS

  • 12 h talk time
  • Bluetooth for phones and tablets only

Sync 40

PROS

  • Up to 30 h talk time
  • Link two units wirelessly
  • IP64 and Kensington slot
  • USB-A and USB-C

CONS

  • Three mics
  • 610 g

Similar Comparisons

Quick Verdict

  • Speak2 55 8.2Leads in Mic Array & Full-Duplex
  • Sync 40 8.6Best overallLeads in Speaker Clarity & Volume, Connectivity & Daisy-Chaining, Portability & Power