Otto 2-Wire Acoustic Tube - Motorola GP328 Multipin

2-Wire Acoustic Tube Surveillance Kit for Motorola GP328 Multipin

Clear tube audio with a quick-swap tip when the tube wears out.

Overview

The LEGP328AT-2W is a 2-wire acoustic tube surveillance kit for Motorola GP328 Plus and other Motorola handhelds fitted with the multipin connector. Genuine Otto acoustic tube design routes sound through a clear tube rather than a speaker sitting in your ear, which keeps the ear canal open and comfortable over a long shift.

Unlike the single-wire earhanger kits, this is a true 2-wire design with a separate microphone wire, and Otto's quick-disconnect earphone adapter means you can swap a worn tube for a fresh one in seconds rather than replacing the whole kit. Built for security teams, event crews, and hospitality staff who need clear, discreet, hands-free audio.

Key Features

• Acoustic tube design means an open ear canal and more comfort over long shifts than an in-ear speaker.
• Quick-disconnect earphone adapter means you can replace a worn or split tube in seconds without buying a whole new kit.
• Separate microphone wire means the mic sits wherever's most comfortable, independent of the earpiece cable.
• Professional-grade Otto build means it's made to handle daily wear in demanding environments.
• Motorola multipin connector means plug-and-play compatibility with GP328 Plus and other multipin Motorola handhelds, no adapter needed.

Applications

• Security and crowd control
• Hospitality and retail teams
• Warehousing and logistics
• Event management and production
• Construction and facility staff

What's in the Box

• Otto acoustic tube earpiece with quick-disconnect adapter
• Separate in-line microphone with PTT button
• Motorola multipin connector, ready to plug straight into a compatible handheld

Radio sold separately.

Complete Your Setup

The acoustic tube is the part that wears out first with daily use, but the quick-disconnect design means you don't need a new kit when it does.

• Otto Acoustic Tube Quick Disconnect - Pack of 5, keep spares on hand and swap a worn tube in seconds

Key Specifications

FAQs

How is this different from the earhanger and flexi earhook kits?
Those sit a small speaker in or behind your ear. This one routes sound through a clear acoustic tube instead, which keeps your ear canal more open and is a preference many long-shift users find more comfortable. It's also a genuine 2-wire design, with the microphone on its own separate cable.

What happens when the tube wears out?
Otto's quick-disconnect adapter lets you unclip the old tube and clip in a new one in seconds. Keep a pack of replacement tubes on hand so a worn tube never puts your kit out of action.

Will this earpiece work with radios other than the GP328 Plus?
Yes. Any Motorola handheld using the same multipin connector will work with this kit, not just the GP328 Plus.

Do I need a licence to use a surveillance earpiece like this?
No. The earpiece itself is just an audio accessory, it doesn't transmit on its own. Licensing requirements apply to the radio and the frequency it operates on, not to earpieces or microphones.

Is the kit waterproof?
We haven't seen an official water-resistance rating from Otto for this model, so treat it as splash-resistant at best rather than fully waterproof. Get in touch if you need a confirmed IP rating before you buy.