Headphone amplification Mackie HM-400

Mackie HM-800

Headphone amplification

Whether you need to expand your home studio headphone monitoring capability or add robust cue mix distribution, the affordable HM Series offers the sound quality, reliability, and flexibility you need to expand your setup.

The ultra-compact HM-4 offers a simple yet effective way to split a single stereo signal out into four pairs of headphones. Perfect for quickly splitting a phones mix in the studio or even crowding around a tablet to watch a movie at home.

The two 19" rackmount models, the HM-400 and HM-800, deliver flexible, robust headphone distribution for studios, practice spaces and more.

Features

• Excellent Sound Quality: Premium analog circuitry and design delivers an ultra-low noise floor and high headroom. 
• Ultra-Flexible: From a simple yet effective way to split a single stereo signal out to four pairs of headphones to robust headphone distribution, the HM Series offers a wide range of options to suit your needs.
• Built-Like-A-Tank™: With a heavy-gauge steel chassis, long wear potentiometers and switches, the HM Series is built to last.
• 4-Channel Headphone Amplifier
• 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

Specs

• 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 knobs
  • 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