HM-400 – Overview
Expand Your Versatility!
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 HM-400 4-Channel Headphone Amplifier offers an incredible amount of versatility and excellent sound quality in a single rack space.
Perfect for professional applications including studios, Houses of Worship, practice spaces and more. The HM-400 features a main input with level control plus stereo outs, aux inputs and EQ per channel with 12 total headphone outputs.
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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-Tankâ„¢ construction
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Specifications:
- Frequency Response: 20Hz – 20kHz, ±1dB
- Noise: -66dB
- Distortion: 0.01%
- Main Input (max level): +15dBu balanced/unbalanced
- Aux Input (max level): +20dBu unbalanced
- Headphone Output: 550mW/channel @ 47Ω (+21dBu)
- CMRR (Main Input): >42dB @ 1kHz
- Gain Range (Main Input): -66 to 18dBu
- Input Type: Female XLR Balanced, Female 1/4″ Balanced – 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: 3Ω unbalanced
- Detachable line power cord: -100 – 120V, 50/60Hz, 24W; -220 – 240V, 50/60Hz, 24W
- AC Connector: 3-pin IEC 250VAC, 10 A male
- Display LEDs: Front power on/off, Front input level meter, Front output level meters, L/R mute switches, St./2-Ch swithes
- Dimensions (HxWxD): 1.8″ x 19.0″ x 8.8″
- Weight: 8.0lbs
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GTIN:
0663961054071












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