Headphone Adapters

1/4" is the standard size headphone jack/plug for Stereo and Surround Sound Receivers and Home Stereo Amplifiers. It's the same size as used for Guitar cables and Musical instrument cord connectors.
3.5mm is used on iPods and MP3 players and most types of small electronics that have sound.
2.5mm was usedby many early cell phones
RCA connectors are used on the back of most Home Theater equipment, cable boxes, etc. Generally used for "Line level" not headphone level Inputs/Outputs

products / page
1 2