Mackie HM-400 Rack-Mountable, 4-Channel Headphone Amplifier
Features
- XLR & 1/4" Stereo Inputs and Outputs
- Three Headphone Outputs per Channel
- Per-Channel 1/4" Stereo Aux Input
- 2-Band AEQ, Balance, and Output Controls
- L/R Mute Switches
Description
The Mackie HM-400 is a rack-mountable, 4-channel headphone amplifier designed to provide versatile headphone amplification for artists, musicians, and engineers monitoring through headphones in live stage applications and home, project, commercial, and mobile-recording studios. It features a stereo main output via XLR and 1/4" jacks and twelve 1/4" TRS stereo headphone outputs—three per channel—fed by a customisable blend of inputs.
One stereo main input via XLR and 1/4" jacks can be mixed with a per-channel 1/4" stereo aux input. Each channel offers 2-band AEQ for quick tone shaping, stereo balance or main/aux input mix control, and output level adjustments. Also on each channel are switches for muting left and/or right signals and operating in stereo or mono. 7-segment LED metres display main input and per-channel output levels.
The HM-400 ships with an IEC power cable and occupies 1 RU in a standard 19" rack.
Features
- Distribute signal to up to twelve pairs of headphones
- Occupies 1 RU
- One stereo main input via XLR or 1/4" jacks
- One 1/4" stereo aux input per channel
- One stereo main output via XLR or 1/4" jacks
- Three 1/4" headphone outputs—one on the front panel and two on the rear—per channel fed by an output level control
- 2-band AEQ per channel for quick treble and bass adjustments
- Per-channel Balance knob allows control of left/right level balance or aux/main input mix
- Switches on each channel for L/R mute and St/2-Ch (stereo/mono) mode
- 7-segment LED metering for input and each output channel
- Heavy-gauge steel chassis for rugged durability
Specifications
| Number of Channels | 4 |
| Input Connections | 2 x XLR 3-pin balanced (one stereo pair) 2 x 1/4" TRS balanced (one stereo pair, also accepts 1/4" TS unbalanced) 1 x 1/4" TRS stereo unbalanced for main input 4 x 1/4" TRS stereo unbalanced for aux inputs |
| Output Connectors | 2 x XLR 3-pin balanced (one stereo pair) 2 x 1/4" TRS balanced (one stereo pair, also accepts 1/4" TS unbalanced) 12 x 1/4" TRS stereo unbalanced headphone outputs |
| Maximum Input Level | Main Input: +15 dBu Aux Input: +20 dBu |
| Maximum Output Level | Headphone Outputs: 550 mW per channel at 47 Ohms (+21 dBu) |
| Input Impedance | Main Input: 20 kOhms balanced, 10 kOhms unbalanced Aux Input: 10 kOhms unbalanced |
| Output Impedance | Headphone Outputs: 3 Ohms unbalanced |
| Gain Range | Main Input: -66 to +18 dBu |
| Function Controls | Power on/off Main level knob L/R mute switches per channel Stereo/2-Ch switches per channel 2-band AEQ per channel Balance knob per channel Output knob per channel |
| Frequency Response | 20 Hz to 20 kHz (±1 dB) |
| THD | <0.01% (+4 dBu, 1 kHz, unity gain) |
| Noise | -66 dB |
| CMRR | Main Input: >42 dB at 1 kHz |
| Display | 1 x input level metre 4 x output level metres |
| Power Requirement | 100 to 120 VAC, 50/60 Hz, 24 W 220 to 240 VAC, 50/60 Hz, 24 W |
| Power Connector | 1 x 3-pin IEC male, 250 VAC, 10 A |
| Construction Material | Heavy-gauge steel chassis |
| Dimensions (H x W x D) | 46 x 483 x 224 mm |
| Weight | 3.6 kg |
In The Box
- Mackie HM-400 Rack-Mountable, 4-Channel Headphone Amplifier
- Power Cable
Reviews
(no ratings yet)Give it a quick rating:
Thanks for your rating!
Write a review
Details
- Product: Mackie HM-400 Rack-Mountable, 4-Channel Headphone Amplifier
- Manufacturer: Mackie
- Model: HM-400
- SKU: MACHM400
- RM Product #: 52016
Recently Viewed
View AllMackie HM-400 Rack-Mountable, 4-Channel Headphone Amplifier
