MACKIE HM-4 - 4-Way Headphone Amplifier 1in 4 out AC Input Power Universal:

AC Input Power Universal:

outdated power grid delivers poor quality AC power

and will operate up to 8 hours on 2 1

DBR and DXS series

Handheld microphone (supercardioid

MACKIE HM-4 - 4-Way Headphone Amplifier 1in 4 out AC Input Power Universal:When 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