All-in-one literally. The Samson Expedition XP150 Portable PA system handily packs down into a single 18.8kg unit to make transport easy. Perfect for on-the-go musicians schools conferences and any other event needing powerful sound from a quickly assembled user-friendly PA system. The 2-way vented speakers produce a deep rich bass response without sacrificing high end purity all with broad dispersion. Versatility is the XP150s strength which makes it ideal for small to medium-sized musical educational business and recreational applications.