Because with most MP3 players you can only "output" media. As opposed to "input" meaning it can receive, such as a microphone, or a camera.
output
Out put
Yes an Apple iPod is an mp3 player. The reason why it is an mp3 player is because it plays music on it and it is a hand-held devise. I don't know if this is the right answer because I am only 13 years old. YES THE IPOD IS AN MP3 PLAYER. THERE IS ALSO VARIATIONS THAT PLAY VIDEO AND PICTURES
output devise
An MP3 player uses the file.mp3 (a song for example) as its input. It then decodes (decompresses) this as an MP3 file is a compressed file. The resulting decoded data is then used as it's output, usually sent to a speaker with the help of a digital to analog converter and an amplifier. A MP3 recorder would do the process in reverse and the sound would be its input and the resulting MP3 file would be it's output.
Any MP3 player with a standard 1/8" headset output can be used with the Sony ICFCD7000. This includes the iPod and most other major MP3 players on the market.
RCA or Alpine hd
output
input devise :Touch sensitive keyboard output devise :small dedicated led display
Any of the Sony models will give out great bass output to any set of speakers.
It is an output device
communication