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. 1 xStereoLineSoundMixer 1 x 3.5mm Sound Cable