B-Stock: Mackie HM-400 HM Series 4-Channel Headphone Amplifier

MPN: HM-400-BS
UPC: 00663961054071-BS
Availability: Out of Stock


  • B-Stock.
  • Excellent Sound Quality.
  • Ultra-Flexible.
  • Built-Like-A-Tank.

The Mackie HM-400 is Perfect for studios, practice spaces, quiet stages, and more, the HM Series offers everything you need whether it is just splitting a single signal to your band, or more complex headphone distribution.

Headphone Amplification

Whether you need to expand your home studio headphone monitoring capability or add robust cue mix distribution, the affordable HM Series offers the sound quality, reliability, and flexibility you need to expand your setup.

The ultra-compact HM-4 offers a simple yet effective way to split a single stereo signal out into four pairs of headphones. Perfect for quickly splitting a phones mix in the studio or even crowding around a tablet to watch a movie at home.

The two 19" rackmount models, the HM-400 and HM-800, deliver flexible, robust headphone distribution for studios, practice spaces and more.

Excellent Sound Quality

Premium analog circuitry and design delivers an ultra-low noise floor and high headroom.


From a simple yet effective way to split a single stereo signal out to four pairs of headphones to robust headphone distribution, the HM Series offers a wide range of options to suit your needs.


With a heavy-gauge steel chassis, long wear potentiometers and switches, the HM Series is built to last.

Product Specification:

Type: Headphone Amp

Input Channels: 4

Output Channels: 4 (3 outs per channel)

Analog Inputs: 2 x 1/4" (main L/R rear), 1 x 1/4" (main front), 2 x XLR (main L/R), 4 x 1/4" (aux in)

Analog Outputs: 2 x 1/4" (main L/R), 2 x XLR (main L/R)

Headphones: 12 x 1/4" (8 x rear, 4 x front)

Controls per Channel: Balance, Bass, Treble, Output

Form Factor: Rackmount

Power Supply: Standard IEC AC cable

Height: 1.8"

Width: 19"

Depth: 8.8"

Weight: 8 lbs

More Information
length 20.9
height 3.9
width 10.4
UPC 00663961054071-BS
Condition used
BRAND Mackie
Manufacturer Part Number HM-400-BS