The Behringer P2 Ultra Compact Personal In-Ear Monitor Amplifier features a super-compact and lightweight design as well as a wide array of versatile features. An internal stereo/mono switch enables you to alternate between mono and stereo monitoring sources with the same device whilst the bottom-mounted XLR/TRS combo-jack is equipped with a locking mechanism to prevent disconnects during performances. The P2 offers a high power output suitable for use around even the loudest drummers whilst the simple high-quality level control provides you with effortless personal level adjustment. The P2 is powered by 2 AAA batteries and can run for up to 12 hours. A convenient belt-clip allows for hands-free operation whilst the integrated current limit ensures your ears and your headphones remain protected at all times.