Mackie HM-400 4-Channel Headphone Amplifier

Move up to a rackmount headphone amplifier with the Mackie HM-400. Each channel gets its own level, EQ, and aux input for easy and adjustable monitoring.

The 19" rackmount Mackie HM-400 4-Channel Headphone Amplifier offers an incredible amount of versatility and excellent sound quality in a single rack space. Perfect for professional applications including studios, Houses of Worship, practice spaces, and more. The HM-400 features a main input with level control plus stereo outs, aux inputs and EQ per channel with 12 total headphone outputs.


- L/R Main stereo inputs plus L/R stereo outputs
- 7 segment LED metering per channel plus main
- 3 headphone outputs per channel
- Aux input on each channel with balance control to mix main and aux signal
- Mute and stereo/2-ch mode switches per channel
- 12 total headphone outputs
- Built-Like-A-Tank construction
WARNING: Cancer and Reproductive Harm -

Dimensions and Weight in Packaging
Base Item
Shipping Weight: 10 lbs
Shipping Dimensions: 21 x 11 x 4 in
Manufacturer Part Number (MPN): 2049178-00

For support or warranty questions, please contact the manufacturer:
Phone: 800-898-3211

Reviewers gave this product an overall rating of 4.5 out of 5 stars. (1 ratings)
Submitted April 1, 2019 by Reginald H M in Culver City, CA
"Does it job, and is well built!"
Overall: 4.5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Looking for a rack mounted headphone amplifier with tons of outputs- look no farther! This unit has typical Mackie quality (weighs 8 lbs) and has tons of headroom. All the controls you will need are front and center and firm to the touch, no accidental movement. You also have XLR's for inputs and outputs if you have that requirement plus the standard 1/4" jacks. While other factors can come into play, my unit has NO extraneous noise with my setup! Quality build and does the job very well!
Musical Background:
Been around awhile. Play out and for fun.
Musical Style:
Little bit of everything.
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