Selling my Hearback system, which includes the distributor and TWO mixers. Each mixer allows for a separate headphones or in-ear monitor mix for a performer, giving them control over their own mix while playing. Each one has two headphone outs and no external power is required. The distributor has DB25 connectors on the back, allowing up to 8 channels with the option of stereo linking. There's also a built in limiter.