Behringer Powerplay Pro HA4400 Rackmount Headphone Distribution Amplifier

I was using this as part of a rehearsal setup for live headphone monitoring but just switched over to a fully wireless setup. Everything works as it should. No issues from this unit.

From Behringer:

• 4 totally independent stereo high-power amplifiers in 1 U package
• Highest sonic quality even with extremely high volume levels
• 4 independent input/aux sections provide up to 4 stereo mixes
• Stereo Aux input for each channel allows you to mix in any instrument or sound source
• Each channel with separate Output level control
• Mono/stereo switch for each channel gives you for more flexibility
• Left/right Mute switches for each channel enable you to run 2 different mixes in mono mode
• One front and 2 rear output jack connectors for each channel
• Accurate 4-segment LED meter for output level of each channel
• Direct input connector on the front for easy connection of any source
• Paralleled Main outputs to chain several headphone amplifers
• Servo-balanced, gold-plated XLR and 1/4" TRS inputs and outputs
• Ultra-low noise 4580 audio operational amplifiers for outstanding sound performance
• High-quality detented potentiometers and illuminated switches
• Internal power supply design for professional applications
• High-quality components and exceptionally rugged construction ensure long life