Product Description: HA400 Ultra Low Noise 4-Channel Stereo Headphone Amplifier 4 Channels: Experience superior audio quality with four independent stereo high-power amplifier sections. This headphone amplifier ensures the highest sound quality, even at maximum volume, making it compatible with almost all types of headphones. Share Single Stereo Source: Connect up to four headphones without any signal loss. Each channel features individual volume knobs, allowing for personalized sound levels. Enjoy minimal distortion and no crackling, even at top volume, ensuring a seamless listening experience. Low Noise: Designed for ultra-low noise performance, this amplifier is perfect for listening to music or watching TV. Whether you have multiple settings on your computer or are using a stereo amplifier, this device provides clear and uninterrupted audio. Portable: With its durable and compact design, this headphone amplifier is ideal for applications requiring multiple headphone connections. The strong metal construction ensures tight connections, while the glossy knob operation adds a touch of elegance and ease of use. Applications: Perfect for studio and stage use, this amplifier is ideal for up to four people monitoring the mix during workouts, live performances, or simply enjoying TV with earbuds. It’s a versatile tool for both professional and personal audio needs. Enhance your audio experience with the HA400 Ultra Low Noise Headphone Amplifier, designed for those who demand high-quality sound and versatility in a compact package.