Poly EncorePro 310 with a USB-C connector — a corded headset for contact centres. A monaural configuration with a 30 mm driver and a flexible noise cancelling boom. It plugs straight into a computer and carries call control on the cable.

USB-C connector, plugs in directly

Monaural, one ear stays open

30 mm driver

Weight 70 g

Call control on the cable

Two-year manufacturer warranty

Poly EncorePro 300 ordering variants we offer
Order code	Model	Configuration	Connector	Inline controls
77T43AA	310	monaural	QD	no
767G1AA	310	monaural	USB-A	yes
760Q8AA	310 (this product)	monaural	USB-C	yes
77T26AA	320	stereo	QD	no
767G0AA	320	stereo	USB-A	yes
767F9AA	320	stereo	USB-C	yes

This code plugs straight into a computer and needs nothing else. Only the QD codes, that is 77T43AA and 77T26AA, need an adapter. All six codes in the 300 range are TAA versions.

Key features

USB-C connector, the headset plugs straight into a computer without an adapter
30 mm driver with a 20 Hz to 10 kHz bandwidth
Flexible 135 mm boom with 290 degrees of rotation and a noise cancelling microphone
Call control on the cable, answer, mute and volume
Replaceable ear cushions for all-day wearing in shift work
SoundGuard hearing protection, sound limited below 118 dBA
Two-year manufacturer warranty

Description

A headset made for shift work

The EncorePro 300 is the most affordable Poly range for contact centres. It is built around what matters in a call centre: low weight, replaceable ear cushions, a flexible boom and audio tuned for the voice rather than for music. The driver bandwidth is therefore 150 Hz to 6.8 kHz, the band of the human voice. It is not for listening to music, it is for eight hours of calls.

It plugs in directly, with no adapter

This code ends in a USB-C connector, so it plugs into a computer and works. It needs no adapter and no extra cable, unlike the QD codes. It also carries call control on the cable, that is answer and end, mute and volume. The cable is 2190 mm long, substantially more than the 762 mm of the QD versions, where the rest of the run is supplied by the adapter.

When to take the QD version

If the agent leaves the desk, walks to the printer or over to colleagues, the QD version makes sense. It is a break-away, so the agent disconnects with one click and keeps the headset on. The condition is that a DA75 or DA85 adapter or an MDA switch is bought with it. The QD version also suits places where the headset connects to a desk phone, because only the cable changes.

Strengths and limits

Strengths

A QD break-away, the agent leaves the desk without taking the headset off
One headset outlives several generations of phones, only the cable changes
Low weight of 70 g and replaceable ear cushions
Audio tuned for the voice, a flexible noise cancelling boom

Limits and what to tell the customer

The headset will not connect to a desk phone. The USB-C connector is meant for a computer, a phone needs the QD version with a cable.
The agent cannot disconnect from the desk with one click, as the QD version allows. They must take the headset off or unplug it from the port.
The box holds only the headset and a guide. No cable, no case, no spare ear cushions.

⚑ atlantis note

With this code you need not ask about the cable

This is the simpler half of the range. The headset plugs into USB and works, nothing is bought with it. Watch the opposite case though: if the customer needs to connect a desk phone as well, this code cannot do it and the QD version with the matching cable is theirs. So ask whether calls are made from the computer only.

QD or USB is decided by how much the agent moves

If the agent leaves the desk, walks to the printer or over to colleagues, QD makes sense because they disconnect with one click. If they stay put, USB is cheaper and simpler and additionally has controls on the cable. Ask about this rather than about price, the difference is in operation, not in audio specifications.

Every code in the 300 range is TAA

All six codes we carry are TAA versions, that is compliant with the US Trade Agreements Act. For a Czech customer that is neither an advantage nor a drawback, it simply means no non-TAA version is in our offering. If the customer explicitly requires TAA, the 300 range meets it.

Who it suits

Recommended deployment
Recommended use	a corded headset for contact centres with an emphasis on audio quality and all-day agent comfort, with a flexible boom and fold-flat earpieces
Position in the portfolio	corded contact centre headsets, EncorePro 300 range, the most affordable of the three
How it differs from the 500 and 700	it is more affordable and lighter with a simpler construction and a narrower driver bandwidth; it offers neither a voice tube version nor convertible wearing

Suitable

Contact centres and helpdesks on shift work where headsets are deployed in tens to hundreds of units and agents move away from the desk. Environments that already have QD cables or switches.

Verify

What the headset plugs into, a computer, a desk phone or both, and pick the adapter or cable accordingly. Whether the agent needs controls on the cable, in which case the USB version. Monaural or stereo. Whether the customer already has QD accessories.

Consider another model

EncorePro 500 for a more comfortable build and a voice tube, EncorePro 700 for the top tier, Blackwire 3200 for an ordinary office on USB, Savi 7300 for a wireless contact centre.

The “Verify” and “Consider another model” cards come from the experience of the atlantis team.

What it connects and how

Computer

Directly by the USB-C connector

The headset plugs straight into the computer's port. No adapter and no extra cable is needed.

USB-C

no adapter

Desk phone

This code does not connect one

The USB-C connector is meant for a computer. A desk phone needs the QD version and a cable chosen by phone brand.

QD versions only

Computer and phone

Controls on the cable

The cable carries a control module for the call, that is answer and end, mute and volume. The QD version does not have it.

answer

mute

volume

Certification for this order code: CE. The USB versions additionally support Windows 11, Windows 10 and macOS, and code 760Q8AA also carries the TCO Certified ecolabel.

Connection and cable

Poly EncorePro 310 with USB-C connection
Item	Value	Note
Connector	USB-C	plugs in directly, no adapter needed
Cable length	2190 mm	the whole run from the headset to the connector
Supported systems	Windows 11, Windows 10 and macOS	for the USB versions
Inline controls	answer and end, mute, volume	the QD version does not have them

Audio and microphone

Poly EncorePro 310 audio and microphone
Configuration	monaural, model 310, one ear stays open
Speaker	30 mm driver, bandwidth 20 Hz to 10 kHz
Microphone	noise cancelling, bandwidth 35 Hz to 21 kHz
Microphone boom	flexible, length 135 mm, 290 degrees of rotation
Controls	on the cable, call answer and end, mute and volume
Ear cushions	replaceable, soft
Hearing protection	SoundGuard, sound limited below 118 dBA
Weight	70 g
Code version	TAA version
Colour	black

What is in the box

In the box

Headset with a cable terminated in a USB-C connector
User guide

Not included

An adapter to another connector, the headset is fixed to USB-C
Spare ear cushions
Travel case
Poly+ Partner service programme

Order it with the headset

Poly Lensno order code

Firmware updates and headset settings, working directly on the USB versions.

Poly+ Partnerby model and term

Extended support with expedited replacement, ordered with the headset.

MDA524 QD to USB-A switch8L544AA

For workplaces with a computer and a desk phone at the same time.

3.5 mm plug to QD cable85Q40AA

Three metres, for connecting to a desk phone with a plug socket.

Variants and products in the range

Poly corded contact centre headsets we offer
Range	Tier	What defines it	Purpose
EncorePro 300 ◂ this product	entry	light build, QD and USB	volume deployment in a call centre
EncorePro 500	mid	voice tube, convertible wearing	more demanding acoustics
EncorePro 700	top	the top contact centre tier	key workplaces
Blackwire 3200 and 3300	office	USB, controls on the cable	an ordinary office, not a call centre
Savi 7300 Office	wireless	DECT with a desk base	a call centre without a cable

What to verify before ordering and deploying

Where calls are made from: this code serves a computer only, a desk phone needs the QD version
What it plugs into: a computer, a desk phone or both, and accordingly a DA, a plug cable or an MDA
Agent movement: if they leave the desk, QD; if they stay put, USB is simpler
Inline controls: only the USB-A and USB-C versions have them, the QD version does not
Configuration: monaural when the agent needs to hear colleagues, stereo when the room needs shutting out
Consumables: agree the supply of spare ear cushions upfront, in shift work they wear out fast

The atlantis team helps with every point. From picking the adapter or cable by phone, through choosing the configuration, to supplying consumables.

Management and services

Poly Lens: on the USB versions inventory, bulk settings and firmware updates; the QD version is managed through the attached adapter or switch
Poly+ Partner: local support from an experienced certified team in Czech, by phone, chat, web and video call, priority device replacement in which the manufacturer ships the replacement part the next business day and pays the shipping, all under the terms of the programme and for its whole validity, so care can continue even after the warranty ends
atlantis deployment: designing the headset plus adapter combination for the workplace, bulk configuration and training the agents

Warranty

Standard two-year limited HP Poly warranty. Extended support with expedited replacement is provided by the Poly+ Partner programme.

Frequently asked questions

Can I plug the headset straight into a computer?

Yes. This code ends in a USB-C connector, so it plugs in directly and needs nothing else. Only the QD codes need an adapter.

What is the QD connector good for?

The agent disconnects with one click and leaves the desk without taking the headset off. At the same time one headset outlives several generations of phones, because only the cable changes. The connector is rated for more than 30,000 disconnects.

Why is the driver bandwidth only 150 Hz to 6.8 kHz?

It is deliberate. The band is tuned to the human voice, which improves intelligibility in a contact centre. The USB versions have a wider band, 20 Hz to 10 kHz, because they also play the computer's system sounds.

Does the headset have volume control?

Yes, the cable carries a control module for the call, that is answer and end, mute and volume. The QD version has no control on the cable.

What does the TAA version mean?

It is compliance with the US Trade Agreements Act, which matters for supplies into US government structures. All six EncorePro 300 codes we carry are TAA versions.

Manufacturer: Poly (Plantronics)
Weight: 0.07 kg
Headset type: Cable
A headset designed for: Computer
Connector type: USB-C
Structural design: Monaural (one ear)
Way of wearing: Head clip
Speaker frequency range (Hz) - minimum: 200
Speaker frequency range (Hz) - maximum: 6800
Microphone type: Directional microphone (Noise Canceling)
Microphone boom length: Long
Microphone arm mobility: Rotates 270°
Material of the earrings: Foam earpad
Compatibility: Universal Compatibility

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