Mackie HM-400 4-Channel Headphone Amplifier

The HM-400 distributes headphone mixes to a studio, house of worship, or practice space from a single rack space. Four channels each carry three 1/4-inch headphone outputs, for 12 outputs total, with an aux input and balance control per channel to blend in a personal mix against the main stereo feed.

Each channel has 7-segment LED metering plus mute and stereo/mono switches, and the whole unit carries Mackie\'s Built-Like-A-Tank construction for daily studio use.

Headphone Outputs	12 total (3 per channel x 4 channels)
Inputs	L/R main stereo XLR, plus aux input per channel with balance control
Outputs	2x L/R TRS main, 12x 1/4\" TRS headphone
Rack Format	19\", 1 rack space
Metering	7-segment LED per channel
Controls	Mute and stereo/mono switch per channel