Welcome to our store! This stereo mixer blends 4 stereo audio signals, mixing sound from instruments, CD players, tape recorders, computers, mobile phones, and tablets to speakers and headphones. Features 4 channels with RCA input and 1 channel with RCA output for easy use, making it the perfect choice for headphones and speakers. Each channel has its own independent volume control to adjust the volume as needed, offering maximum convenience. The 4-channel mixer delivers superior sound quality, even at maximum output, providing excellent audio performance. Boasts a 3.5mm stereo interface and a high-quality aluminum alloy shell for robustness and durability. Item Type: Mixer Material: Aluminum Alloy Power Supply: DC 5-19V Interface: 1 x 3.5mm/0.1in stereo interface, 4 x RCA interface, 1 x RA output, 1 x 3.5mm/0.1in headphone output Features: Connect multiple devices simultaneously to share audio or amplifiers – convenient and practical, no need to switch. Connect multiple audio sources simultaneously without interference; mix or output separately. Plus Gain: RCA output port is approximately 2x, headphone port is approximately 4x. Includes: 1 x Amplifier Customer satisfaction is our top priority. If you encounter any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We are committed to providing you with the best after-sales service.