Yes the AMP takes power from my dual Scud and audio input from the jack and then directly to speakers, and i just did a test on my home speakers (which are VERY HIFI ) and you will be amazed of how high it can play and the audio quality, my speakers have a good sensitivity and it helps, i will say that they can play with no distortion from this amp at around 95DB+.

Here's a picture of the the amp.

As you can see the amp is attached directly to the Jack, and then there are speakers out and power that goes to the Micro DC plug that nokia phones use.