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3.5mm to 2.5mm Adapters

Picture of 2.5mm Mono Plug To 3.5mm Mono Jack Adapter

The 3.5 mm to 2.5 mm adapters are of these phone connectors also known as phone connectors. There are various types of depending on the diameter of the plug as well as the number of contacts they have. The two contact connectors are labeled TS for tip and sleeve, three contacts are called TRS for tip, ring, and sleeve, and four contact adapters are called TRRS or tip, ring, ring, and sleeve. Depending on the way they have been manufactured these can be used to transmit mono or stereo audio messages as well as a video message.


In general one finds 3.5 mm plugs is portable audio equipment such as personal music systems. However, mobile phones, cordless phones, and two way radios have 2.5 mm plugs. In order to connect the two you need 3.5 mm to 2.5 mm adapters. When purchasing these adapters you need to ensure that they not only fit but can also transmit all the signals required.

Many consumer electronic devices such as DVD players, camcorders, and digital cameras use 3.5 mm plugs. These connectors are used to obtain composite video and audio output. The TRS connection offers mono unbalanced audio and video while the TRRS connection provides stereo unbalanced audio and video.

While some headsets and hands free sets use 3.5 mm connectors, others use 2.5 mm connectors. When you need to connect these devices you need to use the adapters that can convert audio signals from 3.5 mm connectors to 2.5 mm connectors and vice versa.

Older tape and cassette recorders that have microphone inputs have a 3.5 mm connector in TS as well as a 2.5 mm connector for switching on the power supply.

In many personal computers there is a 3.5 mm stereo jack for connection the sound card. Headphones, speakers, and microphones also have these connectors.

Picture of 2.5mm Mono Plug To 3.5mm Mono Jack Adapter

Many LCD monitors with built in sound will also use these 3.5 mm connectors. Other uses include surround sound systems which use a range of 3.5 mm connectors with different number of contacts. Many electronic musical instruments such as guitars, drums, and pianos also have these connectors in different combinations.

Apart from this, video game systems, CCTV camera, and other electronic devices that are used to capture, record, store, or play sound and video use these 3.5 mm or 2.5 mm connectors.


There are now a variety of electronic devices that use 3.5 mm or 2.5 mm connectors to transmit audio and video messages. However, most consumers now want to connect these various devices to set up their home theaters, gaming rooms, and so on. With advances in digital technology, it is possible to now download a movie on a mobile device and watch it on your LCD TV complete with surround sound system. The same LCD TV screen can also be used to play video games or screen a home movie or view holiday snaps.

In order to be able to do all of this, you need to be able to connect the various devices. This can be done using the right 3.5 mm to 2.5 mm adapter.

3.5 mm to 2.5 mm Adapter

Each 3.5 mm to 2.5 mm adapter will have a male plug and a female jack. Depending on the devices you plan to connect you need to ensure that you have the right combination of male and female plug and jack. In addition, you also need to ensure that the adapter will offer the type of connectivity you seek. This means that you need to pick a mono plug or stereo jack as needed to ensure that the right output is delivered to the correct equipment.

Types of 3.5 mm to 2.5 mm Adapters

There are various types of 3.5 mm to 2.5 mm adapters such as the 2.5 mm mono plug to 3.5 mm mono jack, 2.5 mm mono plug to 3.5 mm stereo jack, 2.5 mm stereo plug to 3.5 mm mono jack, and so on.

Basic Features

All of the 3.5 mm to 2.5 mm adapters have certain basic features. They are made of black molded plastic and have nickel plated contacts. They have an external length of 37 mm and a body diameter of 10 mm.

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