Rolls MX22s Mini Mix - Line Mixer
The Rolls MX22s is a two-channel audio mixer. Channel 1 sports a 3.5mm stereo input, and channel 2 has a stereo RCA input. Both inputs are suitable for line-level sources. There are level controls for both channels, and two separate outputs.
The MX22s can help when you're plugging devices into a home entertainment system, and you have more devices than inputs on your A/V receiver. You can plug both a CD player and the output of an MP3 player into the MX22s, and mix them both into a single input on the home entertainment system.
If you have a wireless microphone system where the receiver can output a line-level signal (something like the Sennheiser Evolution series comes to mind), then you can mix a microphone and a CD player into a single input. The output of the MX22s can be plugged into a PA system, a home entertainment system, a powered speaker, or any line-level input. A power adapter is included.