Features: Brand new and high quality Immerse yourself in the world of balanced output with the MAX97220 differential to single ended headphone amplifier board. This amplifier board offer exceptional sound quality and durability, making it a reliable choice for audios enthusiasts. Designed for a wide ranges of users, this amplifier board caters to the needs of audiophiles, musicians, and gamers alike. Whether you're at home, in the studio, or on the move, this amplifier board ensures an immersive audios experiences. Unleash the full potential of your headphones with the MAX97220 headphone amplifier board. Elevates your listening experience. Specifications: Material: PCB Working Voltage:DC 2.5~5.5V Package Includes: 1x Ear Amplifier note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!