The HP-1 is a belt-worn; battery-powered headphone amplifier that brings excellent performance to portable applications. With a locking 1/4”/XLR Combo input jack, sturdy belt clip, and output volume control, it provides reliable performance both on and off the stage. The HP-1 provides a high output level when used with a variety of different headphones and is great for in-ear monitoring applications. Its long battery life will not leave you stranded. The HP-1 is packaged in a rugged extrusion, with heavy-duty jacks for years of reliable operation.