CME Matrix System 4-Channel Headphone Amp

"The Matrix Y by CME is a 4-channel headphone amplifier for your home project studio. It's also got a unique talkback function that and an extra set of outputs so you can stack multiple units to expand your system. Each of the headphone outputs have their own individual level control so everyone in the studio sets the perfect listening volume for themselves. So what do you do if you have more than 4 people in your band or classroom? No problem because the Line Outputs on one Matrix Y can be connected to the Line Ins on another expanding your headphone system in groups of 4." This headphone amp is in good condition. Includes power supply.