small battery powered preamp.

Innovations

New member
My daughter just got a mini mp3 player and I noticed that it can record on a line-in. so the thought was whether it could serve as a really tiny interview recorder. But the lline-in jack does not have plug-in power so I would need some way to get the mic signal up to line level. Normally of course that would be a preamp but a regular preamp using AC power would spoil the whole 'tiny superportable' goal.

Any suggestions?
 
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