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Based on price data from 7 merchants for "Mackie HM-400 4 Channel Headphone Amplifier". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The Mackie HM-400 4-Channel Headphone Amplifier is a versatile powerhouse that fits snugly into a 19-inch rack, making it an ideal choice for studios, Houses of Worship, or any professional audio setup. This amplifier is designed to manage multiple audio sources with precision, featuring 12 total headphone outputs across its four channels, each with three dedicated outputs. It offers both L/R main stereo inputs and outputs, enabling seamless audio distribution.
Each channel boasts an aux input, allowing for a customized mix of main and auxiliary signals with a dedicated balance control. The inclusion of a 2-band EQ per channel means quick and efficient tone adjustments are at your fingertips. The Built-Like-A-Tank™ construction ensures reliability and durability, featuring a heavy-gauge steel chassis that withstands the demands of daily use.
The intuitive design includes 7-segment LED metering for both the main input and each channel output, providing clear visual feedback to ensure optimal audio levels. With its premium analog circuitry, the HM-400 delivers excellent headroom and a low noise floor, ensuring crystal-clear monitoring for every headphone mix.
Key Features:
- Rackmount 4-channel headphone amplifier
- 12 total headphone outputs (3 per channel)
- L/R main stereo inputs and outputs
- Aux input on each channel with balance control
- 2-band EQ and mute/stereo switches per channel
- 7-segment LED metering for each channel and main input
- Built-Like-A-Tank™ construction with heavy-gauge steel chassis
Owner's manual
Mackie HM-400 4 Channel Headphone Amplifier User ManualProduct specs
| 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. |
FAQs
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How many headphones can the Mackie HM-400 4-Channel Headphone Amplifier support simultaneously?
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The Mackie HM-400 can support up to 12 pairs of headphones simultaneously, with 3 outputs per channel across its 4 channels.
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What are the main input options available on the Mackie HM-400?
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The Mackie HM-400 offers versatile input options, including 2 x 1/4" main L/R rear, 1 x 1/4" main front, 2 x XLR main L/R, and 4 x 1/4" aux inputs.
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Can the Mackie HM-400 be rack-mounted in a studio setup?
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Yes, the Mackie HM-400 is designed in a rackmount form factor, making it suitable for integration into standard studio rack systems.
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Does the Mackie HM-400 allow for individual channel control?
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Each channel on the Mackie HM-400 features controls for balance, bass, treble, and output, allowing for personalized adjustments for each listener.
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What type of power supply does the Mackie HM-400 use?
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The Mackie HM-400 uses a standard IEC AC cable for its power supply, compatible with typical studio power setups.
Videos
Audiophile
Mackie HM 400 4-Channel headphone amplifier Unboxing Review Usage | Malayalam |
Mackie HM 400 4-Channel headphone amplifier Unboxing Review Usage | Malayalam |
Audiophile
ampli headphone | Mackie HM-400
Laris Audio Channel
Reviews
PROS
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Solid build quality; feels heavy and durable
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4 individual channels with separate aux inputs for flexibility
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Clean audio with minimal self-noise
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Effective EQ controls with noticeable impact on sound
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Versatile connectivity with both XLR and 1/4" jacks
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Aesthetically pleasing with clear LED meters
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Ample power for high-impedance headphones
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Suitable for in-ear monitoring in quiet spaces
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No extraneous noise; clear sound reproduction
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Cost-effective solution for multi-channel headphone amplification
CONS
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Stepped knobs impede fine-tuned level adjustments
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Wiggly knobs suggest lower-quality components
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Bright LEDs can be overwhelming in dim environments
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Front-mounted aux inputs can interfere with other connections
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Some users report insufficient volume output
5.0 out of 5
Based on 1 Review and 3 Ratings
140
A Great Way To Turn the Volume Down and Still Hear Everyone
For those who want to be able to create an environment for rehearsal and clarity of listening, or if the desire is just to not have to blast the PA to rehearse with a band, this unit is a serious blessing.
Genre Usage
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Used With
Based on how musicians on Equipboard use Mackie HM-400 4 Channel Headphone Amplifier, it is most commonly used with the following gear.
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