General
There are different ways to amplify the sound of your cajon, but one of the best ways is to use a preamp and a pickup which is exactly what Meinl's PA-CAJ consists of. It's easy to set up and is suitable for most cajons. The PA-CAJ is powered by two CR2032 button-cell batteries that are included, as is everything else you need.
The Meinl PA-CAJ Cajon Pickup and Preamp
The preamp has volume and tone controls as well as a phase button to eliminate any problems with feedback you might have. Simply set this up and you'll be ready to play in no time!