The Aker has it's own speaker. Get regular mic tips. There are several different options on where to wear/mount the amp. Search the forums. I wear mine behind me via the neck strap. It fits better there than under the front chest piece. I have the 12 watt version, which is a bit thicker than the 10 watt version. It will sound fine most anywhere you mount it. Experiment and see what works for you (check volume, wearablilty, and feedback).