Adapter set for connecting devices with a jack plug in the aircraft. The set consists of a compact adapter with 2 x 3.5 mm jack plug mono to 3.5 mm jack plug stereo, designed specifically for connecting stereo headphones in aircraft. It also includes a compact adapter from 3.5 mm jack plug to 2 x 3.5 mm jack plug stereo, allowing two headphones to connect to one output. Additionally, there is a compact adapter from 3.5 mm jack plug to 6.3 mm jack socket stereo, which is used for connecting 6.3 mm plugs to portable devices such as CD players and MP3 players. The set features a roll-up cable of 1.2 m with a 3.5 mm jack plug to 3.5 mm jack socket stereo, providing an extendable cable for transmitting audio signals.