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.

• Maximum Level: (1/4" input)+22 dB
• Input Type: Female 1/4" phono, unbalanced, stereo
• Input Impedance: 10k Ohms each channel, unbalanced
• Output Type: 4 x Female 1/4" phono, unbalanced, stereo
• Output Impedance: 47 Ohms each channel, unbalanced
• Level Control: 4 x rotating phones knobs
• Crrent Draw: +12V DC
• Display LEDs: <220 mA, maximum
• Dimensions: 51mm x 109mm x 58mm
• Weight: 0.2 kg