The 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. Dual 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. One little 9V battery lasts up to 12 hours, so the P1 will go as long as your next show or studio recording session. Or, use the optional PSU-SB DC power supply for the ultimate in dependable power. And the P1's metal chassis is built like a tank to handle even your most- demanding and energetic performance. Small enough to hang on your belt or mount on a mic or drum stand, the P1 puts complete balance and volume control in your hands.