U94 PTT 6 Pin Cable Adapter for GP328 GP320 Radios - Tactical Audio

In this review the U94 PTT 6 Pin Cable Adapter is judged as a compact, purpose-built interface for users who need reliable push-to-talk and headset connectivity with legacy Motorola-style radios. The main reason to consider it is its combination of a six-pin M-head jack for direct radio compatibility and a built-in microphone/PTT button that makes radio use with earmuffs or tactical headsets straightforward. For field operators, event staff, or hobbyists using GP320/328-series radios, this adapter removes the guesswork of wiring and provides two cable options for 3.5mm audio or 2-pin headsets.

Key Features

• Six-pin M-head jack: Provides direct compatibility with a wide range of walkie-talkies so users avoid improvised connectors and unreliable adapters.
• Built-in PTT microphone: Lets the wearer receive and transmit by pressing a single button, simplifying hands-on radio operation during active tasks.
• 3.5mm jack option: Supports earmuffs, speakers, or third-party headsets with a 3.5mm input so audio gear can be used without modification.
• Lightweight construction: Keeps the assembly comfortable during long shifts and makes it easy to clip on and carry without adding bulk.
• Back clip on cable: Secures the cord to clothing or straps to reduce accidental pulls and keep the connector stable in outdoor activities.
• Two cable combinations: Offers either a 3.5mm cable or a 2-pin cable to match common tactical headset wiring standards for greater flexibility.

Who It's For

The adapter is best for professionals and hobbyists who use Motorola-style radios such as the GP320, GP328, GP329 series and need a simple PTT interface that works with hearing protection or tactical headsets. It suits event staff, range officers, security teams, and amateur radio operators who require a compact inline microphone and a robust PTT control.

Those who should look elsewhere include users with radios from brands not listed or people who require advanced noise-canceling microphones, digital encryption, or integrated headset boom mics not supported by a 3.5mm or 2-pin passive connection.

Pros & Cons

Pros

• Direct six-pin M-head compatibility with many Motorola-style walkie-talkies for plug-and-play use.
• Built-in microphone and PTT button simplifies communication without extra headsets wiring work.
• 3.5mm cable option allows use with common earmuffs and speakers for flexible audio setups.
• Lightweight design and back clip improve comfort and retention during active use.

Cons

• Does not include advanced noise-cancelling electronics, so performance depends on the attached headset or muff.
• Limited to the radio models and connector types listed, so incompatible radios will need a different adapter.

Specifications

Our Verdict

The U94 PTT 6 Pin Cable Adapter is a practical, no-frills solution for users of compatible Motorola-style radios who need a reliable inline microphone and push-to-talk control that works with earmuffs and tactical headsets. It delivers clear value by avoiding custom wiring and offering both 3.5mm and 2-pin options, making it a solid buy for field crews and radio enthusiasts who prioritize simplicity and compatibility over advanced audio processing.

Frequently Asked Questions

Will this adapter work with my GP328 radio?
Yes, the six-pin M-head jack is specifically listed as compatible with GP328 and other GP320-series radios.

Can I use standard earmuffs with this cable?
Yes, the G1 plug cable includes a 3.5mm jack option that fits earmuffs and speakers with a 3.5mm input.

Does the adapter include a microphone and clip?
Yes, it has a built-in microphone, a PTT button and a back clip to secure the cable to straps or clothing.