In-ear monitor amplifier for personal monitor applications with a High power and "drummer proof" headphones output. Dual XLR inputs allow for 2-channel mono or stereo operationwith Switchable stereo/mono operation with mix function. Battery control with dual LED indicators Runs up to 12 hours on a 9 V battery (not included). Drummer-Proof OutputThe P1’s high-power headphone output ensures that as the band gets louder, you’ll still be able to hear every nuance of your performance. And the P1’s simple user interface makes it easy for everyone to dial in a perfect mix every time.Using the P1 also helps protect your hearing in two ways. First, thanks to a built-in current limiter, unexpected peaks in signal level won t get to your ears. Second, the simple act of wearing headphones or earbuds helps isolate your ears from loud stage volume of instrument amps and monitor wedges. With the P1, you can clearly hear your own performance and blend in the ideal amount of the rest of the band. The Perfect Monitor MixDual XLR inputs allow 2-channel, mono or stereo operation with a convenient mix function which allows you to run two sources into the P1 and dial-in exactly what you want to hear as you perform. Two simple controls, Level and Balance, help you achieve the perfect mix in an instant. The P1 lets you take control of what you hear and allows the engineer to concentrate on providing the audience the best listening experience. Plus, setup is so fast and easy, letting you concentrate on putting on the best performance when you hit the stage.