I got one of these to allow my wife or I to listen at whatever volume we want while keeping the TV speakers muted so the other person can sleep. It works just as I wanted and expected it to.
The only problem is that it uses 1/4" TRS jacks for the input and outputs. This is fine if you're using it with standard recording studio/musician's connectors and cables, and of course, that's the market this amp was designed for. I think the manufacturer would sell a TON of these if they made a version with RCA jacks for the input and 1/8" TRS jacks for the headphone outputs. That would match what most consumers will have coming from their TV these days and what they'll find on their headphones/earbuds.
So the issue becomes finding 1/8" Female TRS to 1/4" Male TRS adapters that aren't total junk. I tried a few different ones found here, and had extremely poor results from most of them. Most didn't make a secure positive mechanical or electrical connection. It's hard to imagine how they can even sell most of them! But again, this is NOT the fault of this little amplifier, it's just something to be aware of.
I finally ordered some adapters from Parts Express (a seller who does sell here on Amazon), but I had to get them directly from that supplier since they didn't seem to have them available here on Amazon. I hope I can say that on here without it being censored or causing friction.
Those adapters work perfectly. They fit tight and make solid electrical contact.
With that problem taken care of, the unit does just what I need it to do, and the sound quality is plenty good for TV viewing. I'm not going to say that it's an audiophile-grade headphone amp, but it's really not bad at all.
Having independent volume controls for up to four people is nice so everyone can use a setting that suits them. As I said, the main use for me is so either my wife or I can watch TV without disturbing the other person if they're sleeping or talking on the phone, etc. We just keep a couple pairs of headphones and this amp at our usual watching position, and it's very handy.
I've seen complaints on here about buzzing or receiving AM radio broadcasts. I suspect that in all of these cases, the true culprits are either poor electrical contact when using crummy adapters or cables OR they've managed to allow the metal case of this unit to come into contact with something that's grounded (but not well) to another piece of their equipment, thus creating a "ground loop". Ideally, you will keep this unit's case electrically isolated from anything that might create a ground loop back to your audio source. With this amplifier and your headphones "floating" electrically from everything else, you will not likely get hum or buzz.
And with good, solid electrical connections (avoiding poor adapters, etc), you will likely avoid any reception of strong AM radio signals in the area.
All of this would be true of any amplifier.
The sound quality is perfectly fine for an amp of this price range. It drives various headphones to levels far above anything I've needed. It seems to have fine frequency response and reasonably low distortion. The volume controls move smoothly and create no static. And I've been using it for a few years and had zero reliability issues.
So I give the amplifier five stars for doing what it is supposed to do quite well.
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Customer Review: can work as a line level breakout box
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Power Your Headphones With Behringer HA400 MicroAmp 400
Zane Smith
From the manufacturer
MX400
Ultra Low-Noise 4 Channel Line Mixer
- Ultra-compact 4-channel line mixer
- Highest sonic quality even at maximum output level
- Input Level control for each channel
- Power adapter included
MX400
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MICROMIX MX400Despite its ultra-compact size, the MICROMIX MX400 4-channel line mixer is really big on features! Providing the highest sonic quality at all output levels vs. the competition, the MX400 features ultra low-noise 4580 operational amplifiers for outstanding audio performance – the same chips as the ones found in its much bigger brethren. |
ConnectionsExpanding on the capabilities of standard-size mixers is where the MX400 works its magic, for instance when it is used as a sub-mixer. If you are running short on available channels on your “big” mixer and need to add 3 more keyboards to your mix, just connect them to the MX400, dial-in the mix – and connect MX400’s output to a single input on your main mixer. This is just one example of how the MX400 can add versatility to your current setup – just imagine the possibilities! |
Small and SuperbThe MX400 is the ideal solution for mixing multiple line-level signals on a budget. Sure, it’s as cute as a button – but you’ll want to own one because of what it brings to your performance. And the MX400 is so very affordable. Check one out at your Behringer dealer, or place an online order today! |
Compare with similar items
This Item  Behringer HA-400 Ultra Compact 4-Channel Stereo Headphone Amplifier |  |  |  |  |  | |
| Price | $35.00 | $17.99 | $44.20 | $34.68 | $25.99 | $19.99 |
| Delivery | Get it as soon as Tuesday, May 21 | Get it as soon as Tuesday, May 21 | Get it as soon as Tuesday, May 21 | Get it as soon as Tuesday, May 21 | Get it as soon as Tuesday, May 21 | Get it as soon as Wednesday, May 22 |
| Customer Ratings | ||||||
| Volume control | ||||||
| Sound quality | ||||||
| Sold By | Amazon.com | shuangche | COKYISS | COKYISS | Riworal Shopping | ZUKVYE Direct |
| connectivity tech | Auxiliary | Wired | Wired | Wired | Wired | Wired |
| headphones form factor | In Ear | Over Ear | In Ear | In Ear | Over Ear | — |
| connector type | — | 3.5mm Jack | — | plug in | XLR, 3.5mm Jack | XLR |
| headphones jack | 6.35 mm Jack | 3.5 mm Jack | 6.35mm,3.5mm | 6.35mm,3.5mm | 6.35 mm Jack & 3.5 mm | 6.35 mm Jack |
| cable feature | Retractable | Retractable | Detachable | Detachable | Retractable | Retractable |
| control type | control | Volume Control | Volume Control | Volume Control | Volume Control | Volume Control |
| material | Composite | Aluminum | Metal | Metal | Metal, Plastic | Aluminum |
| model name | HA400 | Amplifier | HA800S | HA800 | Headphone Amplifier | H04B |
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Top reviews from other countries
Serena Gómez
Justo lo que necesitaba
Reviewed in Mexico on January 31, 2024Set: Headphone AmpVerified Purchase
Barry E.
Great piece of kit at a low price
Reviewed in the United Kingdom on February 26, 2024Set: Headphone AmpVerified Purchase
patrick B
tres bon rapport qualité prix
Reviewed in France on February 24, 2024Set: Headphone AmpVerified Purchase
Blender
Exactamente lo que necesitaba para mi uso.
Reviewed in Spain on February 24, 2024Set: Headphone AmpVerified Purchase
