Feature: 1. [Stereo Line Sound Mixer] This 4 channel stereo line mixer integrates sound signals from multiple devices into a single output channel, with independent volume control for each channel where minimum volume can be adjusted to effectively mute. 2. [Excellent Sound] Featuring four independent stereo high power 5x amplifiers (14db), this mixer ensures optimal sound quality even at maximum volume levels, delivering clear and powerful sound output. 3. [Superior Performance] This line mixer utilizes NJM4556A low voltage, high current dual operational amplifiers, offering super low noise and excellent sound performance. 4. [Aluminum Alloy Casing] Housed in all aluminum alloy casing, this mixer provides complete isolation from electrical interference to maintain the highest sound quality. 5. [Versatile Application] Suitable for instruments, microphones, phones, computers, amplifiers, speakers, small stage setups, drum kits or sub mixing, and other sound devices. Specification: Item Type: Stereo Line Sound Mixer Material: Aluminum Alloy Color: Black Size: Approx. 11x4.5x3cm / 4.33x1.77x1.18in Power Hole: Approx. 5.5x2.1mm / 0.22x0.08in Voltage: DC 5-12V Input Port: 3.5mm Interface x 4 Output Port: 3.5mm Interface x 1 Static Current: 15mA Maximum Drive Current: 70mA Magnification Factor: 5X (14db). Package List: 1 x Stereo Line Sound Mixer 1 x 3.5mm Sound Cable