Types of Audio Connectors for Handheld Two Way Radios

Updated June 9, 2026.
Two way radios are generally considered easy to operate for point-to-point communications. Just push the button to talk, and release to listen. Yet in spite of this simplicity, there are some aspects to these devices that seem somewhat confusing or complicated to manage. A prime example of this is in regards to the audio accessories, or more specifically, the lack of cross-compatibility between the plugs, ports and different connectors. We are often asked whether the earpieces, headsets and speaker microphones used for one brand of walkie talkie will work with radios from other brands. After all, many other types of audio products follow a set of standards for plugs, jacks and connections, so why not the radios? Aren't audio connectors for radio accessories universally compatible?

If only it were that simple. However, such is not the case.

Many two way radio manufacturers have their own proprietary connector set for their products. Some follow their own standard across their entire product lines, and others, such as Icom and Motorola, use several different types of connectors that are proprietary to specific model tiers and series.

The good news is that this is beginning to change. Thanks in large part to overseas manufacturers, most notably those in China, a standard of sorts began to emerge during the last decade, and its adoption continues to gain serious momentum. The standard? This is the 2-pin Kenwood, or K1 style connector.

Many radio brands such as Baofeng, TYT and Wouxun are now using the K1 connector as the de facto standard for audio accessories. This allows greater flexibility, interoperability and choice for consumers who want to upgrade to a new portable handheld radio, but don't want the expense and hassle of having to toss out all their old earpieces and replace them with new ones. Instead of jamming them into the junk drawer or lobbing them into a landfill, they can now mix and match existing headsets, speaker mics and other accessories with their latest transceiver purchase.

But what about the other name brand manufacturers? Are there adapters or other options that will allow someone to convert one type or brand of audio accessory connector to another?

We get this question a lot. Unfortunately, with few exceptions, the answer is a very disappointing no.

So, how do you determine what audio accessories are compatible with your radio? How can you identify the type of audio connector your radio uses and how can you tell all the different plugs and ports apart from one another?

The chart below lists common connector types and the radios that are compatible with them. Although it was created to cross-reference XLT brand audio accessories, it can be used to help identify connector types for other accessory brands as well.

Click on the connector part number in the chart below to view a sample image of the connector type.