
Mackie HM-400 4-Channel Studio Headphone Amplifier
Optimize Your Headphone Monitoring with the Mackie HM-400 The Mackie HM-400 4-Channel Headphone Amplifier delivers versatile and high-quality sound for professional audio applications. Perfect for studios, houses of worship, and practice spaces, this rackmount amplifier offers extensive control ...
*Price sourced from Amazon.com. Last updated:Aug 29, 2026.Price and availability are subject to change — details.
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Overview
Optimize Your Headphone Monitoring with the Mackie HM-400
The Mackie HM-400 4-Channel Headphone Amplifier delivers versatile and high-quality sound for professional audio applications. Perfect for studios, houses of worship, and practice spaces, this rackmount amplifier offers extensive control and connectivity.
Specifications:
- Channels: 4
- Headphone Outputs: 12 Total
- Frequency Response: 20 Hz – 20 kHz, ± 1 dB
- Input Type: Female XLR balanced; Female 1/4" Balanced ‐ unbalanced
- Output Type: Male XLR balanced; Female 1/4” balanced ‐ unbalanced
- Headphone Output Impedance: 3Ω unbalanced
- Power Requirements: 100 ‐ 120V, 50/60 Hz, 24 W; 220 ‐ 240V, 50/60 Hz, 24 W
- Dimensions: 1.8 in (H) x 19.0 in (W) x 8.8 in (D)
- Weight: 8.0 lb
Key Features:
- L/R Main Stereo Inputs and Outputs
- Aux Input on Each Channel with Balance Control
- Mute and Stereo/2-ch Mode Switches Per Channel
Key Features
Rackmount 4-channel Headphone Amplifier with 12 Headphone Outputs
4 Stereo/2-channel Mode Switches
7-segment LED Metering
L/R Stereo Outputs
L/R Stereo Inputs