![Mackie HM-400 4-Channel Headphone Amplifier](https://cdn11.bigcommerce.com/s-mmffu4sg6a/images/stencil/50x50/products/9871/48507/29327__27419.1661183887.jpg?c=1")
Perfect for studios, practice spaces, quiet stages, and more, the HM Series offers everything you need whether it is just splitting a single signal to your band, or more complex headphone distribution.
The 19" rackmount model, the HM-400, delivers flexible, robust headphone distribution for studios, practice spaces and more.
Mackie HM-400 Features
- 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
- HM-400 4 channel headphone amplifier1
- Frequency Response20Hz - 20,000Hz, ±1 dB
- Noise-66 dB
- Distortion (THD)<0.01% (+4 dBu, 1kHz, unity gain)
- Max. Levels
- Main Input: +15 dBu balanced/unbalanced
- Aux Input: +20 dBu unbalanced
- Headphone Output: 550 mW/channel @ 47Ω (+21 dBu)
- CMRR (main input)>42 dB @ 1kHz
- Gain Range (main input)-66 to 18 dBu
- Input / Output
- Input Type: female XLR balanced, female 1/4" unbalanced
- Main Input Impedance: 20kΩ balanced, 10kΩ unbalanced
- Aux Input Impedance: 10kΩ unbalanced
- Output Type: male XLR balanced, female 1/4" balanced-unbalanced
- Headphone Output Impedance: 3 Ω unbalanced
- Power Requirements
- Detachable Line Cord
- ~100-120V, 50/60Hz, 24W
- ~220-240V, 50/60Hz, 24W
- AC Connector: 3-pin IEC 250 VAC, 10 A male
- Display LEDs
- Front power on/off
- Front input level meter
- Front output level meters
- L/R mute switches
- St. / 2-Ch switches
- Dimensions (HxWxD)1.8" x 19" x 8.8"
- Weight8 pounds
