MX22s is a 2 Channel mixer for mixing a 1/8" line signal such as a laptop computer or Ipod, and a stereo RCA signal such as a CD player. The MX22s has enough output to drive a power amplifier directly, and is ideal for audio visual and aerobics studio applications. The MX22s can be configured as either Stereo (default) or Mono, by moving a shorting jumper on the PCB. Power adapter is included.