Feature: 1. APPLICATION: Monitor headphone amplifier for stage or use in the studio, providing performers and recording artists with a flexible and convenient individual monitoring solution. 2. HIGH POWER OUTPUT: Designed for drummers and other performers, the unit features a high power headphone output that ensures you can still hear yourself play as the band gets louder. 3. NO NOISE AND DELAY: With the professional monitor amplifier, you'll have no hiss, no frequency issues, no breakups, and no sound delay. 4. INPUT MODES: This monitor headphone amplifier supports dual XLR or 6.35mm inputs, allowing two channel mono or stereo operation. 5. 3.5MM OUTPUT: The headphone amplifier features 3.5mm headphone output with integrated current limiting to guard your ears and headphone. Specification: Item Type: Monitor Amplifier Material: Metal Output: 3.5mm Battery Specification: 9V Battery (Not Included). Package List: 1 x Monitor Amplifier1 x Power Cord 1 x User Manual