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Your cart is empty.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.Features: L/R main stereo inputs plus L/R stereo outputs segment LED metering per channel plus main three 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: audio performance frequency response: 20 Hz ‐ 20 kHz, ± 1 dB noise: -66 dB [hm-400]; ‐ 70 dB [hm-800] distortion (THD): +4 dBu, 1 kHz, unity gain; 42 db @1 kHz [hm-400]; > 52 db @1 kHz [hm-800] gain range (main input): ‐ 66 to 18 dBu [hm-400]; ‐ 67 to 19 dBu [hm-800]input/ output input type: female XLR balanced; Female 1/4" Balanced ‐ unbalanced main input impedance: 20 kω balanced, 10 kω unbalanced [hm-400]; 40 kω balanced, 20 kω unbalanced [hm-800] aux input impedance: 10 kω unbalanced [hm-400]; 13 kω unbalanced [hm-800] output type: Male XLR balanced; Female 1/4” balanced ‐ unbalanced headphone output impedance: 3ω unbalanced power requirements detachable line cord: 100 ‐ 120V, 50/60 Hz, 24 W; 220 ‐ 240V, 50/60 Hz, 24 W 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 [hm-400] St./ 2-ch switches [hm-400] stereo/ mono switches [hm-800] in 1/2 switches [hm-800]physical properties height: 1.8 in/ 46 mm width: 19.0 in/ 483 mm depth: 8.8 in/ 224 mm Weight: 8.0 lb/ 3.6 kg.
David
Reviewed in the United States on July 18, 2023
Head phones
Samuel John
Reviewed in the United States on January 3, 2023
For me, there are several major issues with this headphone. 1. Input level knob wasn't fine grained enough to get proper signal level without distoring. There are subtle click levels to the knob when you turn it and its the click level that gets in the way of setting the right inout level. Otherwise, the volume was too low to compensate by headphone volume level. Super frustrating. 2. The aux inputs are on the front, instead of the rear, like for most rackmount gear. I didnt want my tracking input out front, exposing my multichannel snake connectors to more jostling than I wanted all because they get in the way of the headphone outs and volume knobs. 3. Volume output was rather wimpy. I remember the headphone amp on their old 1604 mixer was more powerful and didnt clip/distort as easily as this does.While this may work for someone else's equipment and setup, this was didn't work for me at all and was a big disappointment.
Brad Thunder
Reviewed in the United States on May 23, 2022
This is a very high output headphone Distribution amp with many input and output options. Work great for my Recording studio.
Robert v king
Reviewed in the United States on February 26, 2021
Absolutely love the mackie HM 400, so does everyone else that plugs into it... Thanks 👍🎛️🎧
Isabel
Reviewed in the United States on November 22, 2021
Perfect, just what I needed. Love that you get 4 channels with aux mix blend control and 3 headphone outs per channel. Bass & treble control and main outs as well. Works great, nice clean and plenty loud.
Vic Jones
Reviewed in the United States on March 7, 2020
It did exactly what it said it was going to do! Easy set up, easy tuning. Great product!
joe
Reviewed in Mexico on May 19, 2019
Excelente solución!
Michael Kothe
Reviewed in the United States on March 21, 2019
Excellent quality and functionality. Made my headphones sound better and fuller. Love the ability to power multiple headphones with strategically placed inserts.
Romeo Echo Romeo
Reviewed in the United States on November 16, 2018
Does the job and good for the price....
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