Designed for musicians and performers who demand mobility without compromising audio quality, the HP2 stereo personal headphone amplifier is a great choice for driving wired in-ear monitors (IEMs), as well as headphones. Portable and compact, it offers two XLR line-level inputs and one stereo 1/8-inch headphone output with volume control and can be powered by a 9V battery or a DC power supply. Operation can be switched between stereo and mono, and a Pan knob is provided. A 2m audio cable is included.