This Meyer Sound MM - 4XP unit is a great choice for those who don't need a power supply. It offers compact and self - powered audio solution.

Using the Meyer Sound MM - 4XP is easy. Just connect it to your audio source. Remember, this unit doesn't come with a power supply, so you'll need to use your own compatible one. When not in use, store it in a dry place. Clean it gently with a soft cloth regularly to keep it in good condition. Avoid exposing it to extreme temperatures and moisture.