Audio naprava (iščem)

Zdravo

Ali obstaja kakšna manjša naprava (na polnilec ali baterije) na katero bi priključil 3.5 mikrofon in 3.5 slušalke? Namen je, da se preko slušalk neposredno sliši zvok iz mikrofona.
Nekakšne vrste amplifier?
Iščem preprosto rešitev, ki bi to samostojno izvajala brez uporabe računalnika ali telefona.

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