Presonus HP60 Headphone amplifier

HP60 headphone distribution system, you can easily resolve these problems and provide headphone mixes the musicians will love. That’s because the HP60 is more than a half-dozen headphone amps; it’s a field-tested, easy-to-use solution to a host of common headphone-monitoring issues.
Each of the HP60’s six headphone amps has its own level control and is loud enough to drive the alligators out of the Louisiana swamps. And the HP60 lets you customize each mix. In addition to the two pairs of main stereo inputs, you get an external stereo input with level control, mono, and mute for each headphone channel. So you can send each musician a feed of just their instrument or voice and can control the level separately for each.