MACKIE HM-4 - 4-Way Headphone Amplifier 1in 4 out And a secondary input allows

And a secondary input allows you to set up a seamless

AC Input Power Universal:

Built-in slot for smartphones and new generation tablets up to 12

frequency range:AW+ (470 - 558 MHz)

MACKIE HM-4 - 4-Way Headphone Amplifier 1in 4 out And a secondary input allowsWhen you need more monitoring capacity, the Mackie HM 4 four channel headphone amplifier has you covered. Perfect for studios, practice spaces, quiet stages and more, HM 4 can simply and effectively split a single audio signal to your entire band while maintaining full signal integrity. Share a single stereo source with up to 4 pairs of headphones Individual level control for each output Powered via an included 12v AC adapter Built Like A Tank