They aren't input- they're output as they play music OUT of them.
output
output
output devise
It is an output device
input devise :Touch sensitive keyboard output devise :small dedicated led display
communication
An iPod has both input and output components; the controls are inputs, the headphone is an output, the connection to the computer (and wi-fi for the touch) are input/output components.
The sound card of a computer provides an output - speaker or headphone) and usually an input too - microphone.The card itself is not an output but is an I/O device(input output device) [a bit of semantics here].
Neither, it is a storage device. But if you MUST choose between the two, choose output device.
Yes. Plug the headphone output of the 2488 into the input of the headphone amp and everyone can control their own volume.
Use the 3.5mm input jack plug that is compatible with all audio devices.