Sync 40 vs CP900 Comparison

Compare Sync 40 vs CP900 side by side: specs, ratings, pros and cons, and which one fits your room best.

On this page
Editor's pick
Poly Sync 40
Sync 40
Yealink CP900
CP900

At a Glance

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
CP900

The Yealink CP900 is a portable speakerphone with a six-MEMS beamforming array for 360-degree pickup, rated at 2 m for up to six people. Its speaker is 7 W peak (3 W RMS).

View on Yealink (opens in a new tab)
Best For
Small groups
Mics
6
Pickup
2 m
Talk Time
12 h
BT
4.2
Certified
Microsoft Teams

Review Scores Compared

Expert Score

  • Sync 408.6/10 Leads
  • CP9008.1/10

Mic Array & Full-Duplex

  • Sync 408.1/10
  • CP9008.8/10 Leads

Speaker Clarity & Volume

  • Sync 409.2/10 Leads
  • CP9006.1/10

Connectivity & Daisy-Chaining

  • Sync 408.0/10
  • CP9008.8/10 Leads

Portability & Power

  • Sync 409.1/10 Leads
  • CP9008.0/10

Call Controls & Certifications

  • Sync 409.8/10
  • CP9009.8/10

Why Sync 40 Beats CP900 (and Vice Versa)

Why Sync 40 beats CP900

  • Better speaker clarity & volume: 9.2 vs 6.1 out of 10
  • Better portability & power: 9.1 vs 8.0 out of 10
  • Pickup Range: 2.5 m vs 2 m
  • Speaker: 50 mm vs 7 W peak, 3 W RMS
  • Speaker Frequency Range: 75 Hz - 20 kHz vs 115 Hz - 16 kHz (USB music mode), 115 Hz - 8 kHz (conference…
  • Talk Time: 30 h vs 12 h

Why CP900 beats Sync 40

  • Better connectivity & daisy-chaining: 8.8 vs 8.0 out of 10
  • Better mic array & full-duplex: 8.8 vs 8.1 out of 10
  • Microphones: 6 vs 3
  • Mic Frequency Range: 115 Hz - 7 kHz (conference mode) vs 100 Hz - 6.7 kHz
  • Charging Time: 3 h vs 5 h
  • Weight: 320 g vs 610 g

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

Full Specifications

General

Sync 40CP900
Best ForHuddle roomsSmall groups
Ideal Room SizeUp to 5 x 5 mUp to 6 people
Form FactorBarPuck

Microphones

Sync 40CP900
Microphones36 Better
Pickup Range2.5 m Better2 m
Mic Frequency Range100 Hz - 6.7 kHz115 Hz - 7 kHz (conference mode) Better
Full DuplexYesYes
Echo CancellationYesYes
Noise ReductionYesYes
Mic Type3-mic steerable array—

Speaker

Sync 40CP900
Speaker50 mm Better7 W peak, 3 W RMS
Max Output89 dB SPL (nominal)—
Speaker Frequency Range75 Hz - 20 kHz Better115 Hz - 16 kHz (USB music mode), 115 Hz - 8 kHz (conference)
Speaker Drivers1—

Battery & Charging

Sync 40CP900
Talk Time30 h Better12 h
BatteryLi-ion, 5000 mAhLi-polymer, 2450 mAh
Charging Time5 h3 h Better
Mains PoweredNoNo

Connectivity

Sync 40CP900
ConnectionUSB-A, USB-C, BluetoothUSB, Bluetooth
Bluetooth Version5.1 Better4.2
USB DongleNo (Sync 40+ includes BT600)Optional (BT50)
Link Two UnitsYes (two units, wireless)—
CertificationsMicrosoft Teams (Teams model), ZoomMicrosoft Teams
Cable Length1.05 m—
Bluetooth Range30 m—
Multiple Sources—Yes (3 devices; merge USB and Bluetooth calls)
Bluetooth ProfilesA2DP, AVRCP, HFP, HSP, BLE—

Design & Build

Sync 40CP900
Weight610 g320 g Better
Dimensions38 x 102 x 273 mm132.5 x 35.5 mm (diameter x height)
Dust/Water RatingIP64—
ColorsSilver—
ControlsTouch: call answer/end, mute, volume, programmable button, pairing; buttons: power, wireless daisy chain—
Mute ButtonYes—
Teams / Call Button—Yes (dedicated Teams button)

In the Box

Sync 40CP900
In the BoxSpeakerphone, USB-A cable, USB-C cable, quick start guideSpeakerphone, zipper bag, quick start guide (BT50 dongle optional)
Warranty2 years—

Identifiers

Sync 40CP900
Model Number772C4AA—

Compatibility

Sync 40CP900
OS CompatibilityWindows 11, Windows 10, macOS—
Plug and Play—Yes

Takeaways

  • Our pick: Sync 40, with the highest spec-based rating (4.5/5).
  • Choose Sync 40 for huddle rooms.
  • Choose CP900 for small groups.

Pros and Cons

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

CP900

PROS

  • Six-mic 360° array
  • Light at 320 g
  • Up to 400 days standby
  • Optional BT50 dongle

CONS

  • Bluetooth 4.2
  • No certification listed on the datasheet

Similar Comparisons

Quick Verdict

  • Sync 40 8.6Best overallLeads in Speaker Clarity & Volume, Portability & Power
  • CP900 8.1Leads in Mic Array & Full-Duplex, Connectivity & Daisy-Chaining