Mackie HM-400, 4-Channel Headphone Amplifier
Vendor: Mackie
Available
Mackie HM-400, 4-Channel Headphone Amplifier
The Mackie HM-400 feature its rack-mountable, 4-channel headphone amplifier which is designed to provide a versatile headphone amplification for artists, musicians and engineers monitoring through headphones in live stage applications and home, project, commercial and mobile-recording studios. The Mackie HM-400 has also feature its stereo main output via XLR and 1/4" jacks and twelve 1/4" TRS stereo headphone outputs-three per channel-fed by a customizable blend of inputs.
Additionally, the Mackie HM-400 has one stereo main input via XLR and 1/4" jacks can be mixed with a per-channel 1/4" stereo aux input. Each channel of the Mackie HM-400 offers a 2-band EQ 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 stero mono. Mackie HM-400 also has a 7-segment LED meters display main input and per-channel output levels. The Mackie HM-400 ships with an IEC power cable and occuppies 1 RU in a standard 19" rack.
Mackie HM-400 Main 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 EQ 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
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 EQ 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 meter 4 x output level meters |
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) | 1.8 x 19.0 x 8.8" / 46 x 483 x 224 mm |
Weight | 8 lb / 3.6 kg |