Connects a 2.5mm audio output to a 3.5mm audio source device TRS 3.5mm connection for balanced mono or unbalanced stereo audio, or connection of a microphone Goldplated connectors Compact, flexible adapter 10Year Warranty Analogue audio adapters allow for a simple connection of an audio output such as speakers, headphones or headset to an audio input. The Lindy 3.5mm to 2.5mm audio adapter is a compact solution that allows for the connection of a variety of 2.5mm input headphones to smartphones, laptops & tablets. The small, flexible adapter ensures the connection remains flexible and adaptable for the user. The TRS 3.5mm connection allows for balanced mono input or output audio or unbalanced stereo audio output with connection of headphones.