What earpiece fits the Motorola GP320, GP340 and GP680?

The Motorola GP320, GP340, and GP680 all use the same proprietary block connector (also referred to as the GP340 connector). This means any earpiece designed for the GP340 will also be compatible with the GP320 and GP680. Compatible styles include acoustic tube, D-shape, and G-shape earpieces, all available at EarpieceOnline.co.uk.

The Motorola GP series has been a mainstay in professional communications for decades. The GP320, GP340, and GP680 are analogue two-way radios widely used across security, retail, hospitality, events, and public services. Robust and reliable, these radios have earned a reputation for durability in demanding environments.

But a radio is only as effective as the accessories paired with it. If you're using one of these models and wondering which earpiece will actually fit—and work well—you're in the right place. This guide walks you through everything you need to know, from connector types to earpiece styles, so you can make an informed decision.

What connector do the Motorola GP320, GP340, and GP680 use?

The GP320, GP340, and GP680 all share the same connector type: the Motorola block connector (commonly listed as the GP340 connector). This is a proprietary multi-pin design that differs from the standard Motorola 2-pin connector found on newer MOTOTRBO models.

This distinction matters. Plug in an incompatible earpiece and you won't get audio—or worse, you could damage the radio's port. Always confirm that any earpiece you purchase is listed as compatible with the GP320, GP340, or GP680 before buying.

The good news is that all three models share the same connector, so a single earpiece range covers all of them.

Why does choosing the right earpiece matter?

Earpieces do more than carry audio. In professional environments, they directly affect how quickly and clearly a team can communicate. A poorly fitting earpiece falls out during a busy shift. A low-quality one introduces crackle and distortion at critical moments. And the wrong connector simply won't work at all.

Beyond function, comfort is a real operational concern. Security staff may wear an earpiece for eight to twelve hours at a stretch. Event crew work in loud, active environments where a secure fit is non-negotiable. Choosing the right earpiece for the job reduces fatigue, improves message retention, and keeps teams performing at their best.

What earpiece styles are compatible with the GP320, GP340, and GP680?

Acoustic tube earpieces — best for security and retail

Acoustic tube earpieces route sound through a clear hollow tube that sits in the ear canal. The PTT (push-to-talk) unit and microphone sit lower on the cable, keeping the ear itself looking unobtrusive.

This design is particularly popular in security and retail, where a discreet appearance matters. The tube itself is also hygienic—easy to replace between users—which makes acoustic tube earpieces a practical choice for teams sharing equipment.

The Covert Acoustic Tube Earpiece (ref: actm20) from EarpieceOnline.co.uk is a strong option here. It features Kevlar-reinforced cabling for superior durability, a combined PTT button and microphone, and a mushroom eartip for a secure in-ear fit. It's available with the GP340 block connector and is priced at £20.63. For teams needing multiple units, a Pack of 50 Covert Acoustic Tube Earpieces is available at a 15% discount.

For those wanting the latest in tube technology, the Covert ResoWire Earpiece (ref: actm20-EB01) is worth considering. It uses digital ResoWire tube technology for superior sound quality and fewer blockages than standard acoustic tubes, also featuring Kevlar-reinforced cabling and a PTT button. Priced at £33.29, it represents a meaningful upgrade for users who prioritise audio clarity.

D-shape earpieces — best for hospitality and events

D-shape earpieces (also called D-ring earpieces) loop over the outer ear and sit just inside the ear canal. The flexible rubber loop provides a stable fit without the pressure of a fully in-ear design, making them notably comfortable for extended wear.

Hospitality staff and event teams tend to favour the D-shape style for exactly this reason. Hours of continuous wear don't become uncomfortable, and the design keeps the ear canal less occluded than acoustic tube options.

The D-Ring Covert Earpiece (ref: epm01) from EarpieceOnline.co.uk fits all Motorola 2-pin and GP340 block connectors. The PTT and mic run in-line from the connector to the D-shape, keeping the cable tidy and unobtrusive. At £12.46, it's one of the most cost-effective options available. A Pack of 50 D-Ring Covert Earpieces is also available with a 15% discount for larger teams.

G-shape earpieces — best for active environments

G-shape earpieces take a different approach to the over-ear loop, forming a 'G' shape that many users find more comfortable than the D-ring design. The shape wraps securely around the ear, making it a reliable choice in active or fast-paced environments where the earpiece needs to stay put.

The G-Shaped Overt Earpiece (ref: epm05) is available with the GP340 connector and is priced at £12.92. It's a practical, no-fuss option for warehouse staff, outdoor event crew, or anyone working in conditions where movement is constant. A Pack of 50 G-Shaped Overt Earpieces is available at a 15% discount for bulk purchases.

Listen-only earpieces — when PTT isn't needed

In some roles, users only need to receive audio—not transmit. Presenters, transport staff, and monitoring roles often fall into this category. For these situations, a listen-only (receive-only) earpiece removes the PTT unit entirely, resulting in a cleaner, lighter setup.

EarpieceOnline.co.uk stocks a dedicated receive-only range for Motorola radios. These are worth exploring if your team's workflow doesn't require two-way communication from the earpiece itself.

Key features to look for when choosing a GP series earpiece

• Connector compatibility: Always confirm the GP340 block connector is listed—not the Motorola 2-pin
• Kevlar-reinforced cabling: Significantly extends the life of the earpiece in daily professional use
• Comfort for long wear: D-shape and G-shape designs suit extended shifts; acoustic tube suits shorter, more discreet use
• PTT quality: A well-positioned PTT button reduces fumbling during fast-paced communication
• Cable length: Ensure the cable reaches from your radio's carry position (typically on a belt or vest) to the ear without pulling

How to connect and care for your earpiece

Connecting a GP340 block connector earpiece is straightforward. Align the block connector with the port on the side of the radio and press firmly until it clicks into place. Don't force it—if there's resistance, check the alignment.

For ongoing care:

• Clean the acoustic tube regularly. Use a dry cloth or replacement tube to prevent wax build-up affecting sound quality
• Avoid pulling on the cable. Disconnect by gripping the connector body, not the wire
• Store flat, not coiled tightly. Tight coiling stresses the internal wiring over time
• Replace mushroom eartips as needed. EarpieceOnline.co.uk stocks replacement tubes and eartips separately

Find the right earpiece for your Motorola GP radio

The Motorola GP320, GP340, and GP680 are built to last. The earpiece you pair with them should be too. Whether your team needs a discreet acoustic tube for security work, a comfortable D-shape for long hospitality shifts, or a secure G-shape for active outdoor roles, there's a compatible option available.

Browse the full range of GP320 and GP680 compatible earpieces at EarpieceOnline.co.uk, including the Covert Acoustic Tube Earpiece, the Covert ResoWire Earpiece, the D-Ring Covert Earpiece, and the G-Shaped Overt Earpiece, to find the right fit for your radio and your role.

Frequently asked questions

Do the GP320, GP340, and GP680 all use the same earpiece connector?

Yes. All three models use the same Motorola block connector (GP340 connector). Any earpiece listed as compatible with the GP340 will also work with the GP320 and GP680.

Can I use a standard Motorola 2-pin earpiece with the GP320 or GP340?

No. The GP320, GP340, and GP680 use a proprietary block connector that is physically different from the standard Motorola 2-pin connector. Using the wrong connector will prevent the earpiece from functioning.

Which earpiece is best for security personnel using the Motorola GP340?

Acoustic tube earpieces are generally preferred in security roles due to their discreet appearance and hygienic replaceable tube. The Covert Acoustic Tube Earpiece (ref: actm20) from EarpieceOnline.co.uk is a popular choice, with Kevlar-reinforced cabling and a mushroom eartip for a secure fit.

What is a ResoWire earpiece and is it worth the extra cost for GP series radios?

A ResoWire earpiece uses digital tube technology to deliver clearer audio and fewer blockages compared to standard acoustic tubes. For users prioritising sound quality in noisy environments, the upgrade from £20.63 to £33.29 is generally worthwhile.

Where can I buy compatible earpieces for the Motorola GP320, GP340, and GP680 in the UK?

EarpieceOnline.co.uk stocks a dedicated range of GP320 and GP680 compatible earpieces, including the Covert Acoustic Tube Earpiece, the D-Ring Covert Earpiece, and the G-Shaped Overt Earpiece, with multi-buy discounts available for larger teams.