Behringer MICROAMP HA400 Ultra-Compact 4 Channel Stereo Headphone Amplifier

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.

Perfecto for My Needs!!! I was looking for an affordable way to use my Audiotechnica headphones on my computer when not using them on my personal music production gear. I just wanted to listen to tunes off my computer using my favorite H-phones. Unfortunately, as you all know, many laptops lack the "umpf" to power a pair of H-phones such as the above mentioned. I looked through the various makes and models considering price and feedback and decided on the HA400. With a price of under $20 and 4 input channels to plug in other things such as my computer speakers, I figured, "Why Not?" I tested it out as soon as I received it and was not disappointed. There was not just a noticeable difference,.. There was a "Mega-Difference" in volume output! The volume was so high that I was on the verge of blowing out my external pod speakers. I set both the H-phone and speaker levels at my preferred max on each channel and am now using the computer's volume switch as the main volume adjustment...the rest is history. THINGS I RECOMMEND THAT YOU CONSIDER PRIOR TO BUYING THE HA400!!! 1. Though the thing is compact (will post pics showing the dimensions), it is not portable in the sense that you can listen to it on a road trip or on a bus headed to work. It runs soley on a DC 12 volt adapter and not on batteries. 2. There is no power switch... Be prepared to hook it up to a power strip or buy a cheap foot switch if you want to turn it off using a switch rather than having to unplug it. 3. You will need to buy proper adapters if you are using anything other than 1/4" male plugs. If you want to use 1/8" (3.5mm)- standard plug for a portable device such as laptop, then you will need a 1/4" (6.3mm) Male to 1/8" (3.5mm) Female adapter. 4. You will need an Output / Input cord with one end 1/4" (6.3mm) Male to plug between your device and the HA400. It does not come with one. 5. If you are a hardcore anal-retent about your audio quality, (ie. an audiophile), remember that this is not an EQ. All it does is split one output into 4 and amplifies the sound and it does it well. 6. Other posters have experienced some degree of background noise, depending what you pug into it, you may also... As for me, I have yet to experience any discernible background noise. As far as I'm concerned, I'm happy with the pure sound being amplified. 7. Remember that this thing was made for headphones and anything else such as hooking up speakers to it is basically "Jimmy-rigging". I hooked up speakers and had no problems dispite others having some. 8. Again, I rate this item with 5 full stars because it was perfect for my needs. I can see how others may give it a lower rating on the basis that it was not what they expected to fulfill their own needs. As for me, if I could dedicate a song to this unit it would be, THE CARS, "You're Just What I Needed"...LOL.

I added the Behringer MICROAMP HA400 to my home studio setup and it's been a game-changer. The unit arrived on time and was well-packaged. It's incredibly compact, yet provides four channels which is perfect for my small recording sessions with friends. The sound quality is impressive considering its size and price point. Each channel has its own volume control which allows everyone to set their preferred levels. This is a feature we've found to be invaluable. Setting it up was a breeze. Just plugged in my stereo mix, connected the headphones, and we were good to go. The independent volume controls on each channel are very intuitive and easy to use, even for those who are not technically inclined. The construction seems solid and durable, which is important as it gets moved around quite a bit in my setup. I also appreciate the ultra-compact design which helps in keeping my workspace uncluttered. One minor downside I noticed is that when all four channels are being used simultaneously, there's a slight drop in volume. It's not a deal-breaker by any means, but something to be aware of. All in all, the Behringer MICROAMP HA400 is a cost-effective solution for anyone in need of a multi-headphone setup. It's straightforward to use, offers good sound quality, and is built to last. I would definitely recommend it to others looking for a reliable headphone amplifier without breaking the bank.

In addition to being an audio nerd, I am a home recordist of many moons. Historically, when I make music, I'm entirely on my own and don't need more than one headphone output-- which is good, because most semi-pro interfaces and mixing boards don't give you more than one headphone output. Stupidly, much belated in life, I started a band... and when it came time for us to record, we realized we'd need more than one headphone output to track, mostly to distribute the click track amongst the personnel desperately trying to play against it in the same room. Due to the way we were going to record things, sound quality actually didn't matter much for this particular purpose. So being broke at the moment, I gave the HA400 a go despite a few negative reviews here in the clarity department. It mainly mattered that the 400 could deliver that all-important click track loudly to four people at one time. I was pretty confident that it could do *that*. I am here to report that the negative reviews were either made on the basis of defective units or were made by people who cannot objectively judge the quality of a signal when it comes through a cheap box with "Behringer" printed on the front. The HA400 sounds just fine. I've tested it when fed from my PC's headphone jack and the headphone jack of my Tascam US-1800 (USB audio interface), and have listened to it through six different sets of reasonably capable phones. When you get to about 12 o'clock on the volume dial of each headphone out, you are roughly at what you might call "unity gain" with the headphone output of your source. Past that, the HA400 does deliver additional volume (which has been very valuable in feeding the bash-'em-smash-'em drummer the requisite click; the headphone amp on my US-1800 ain't quite as powerful as it really ought to be). Distortion is sometimes quite discernible when you push an individual headphone out's volume up past 3 o'clock or so, depending on the input. At that point, where distortion *sometimes* audibly kicks in, it's already perhaps 4-6dB louder than the headphone-level input driving it-- no small potatoes. And before that point, it basically sounds like what you're feeding into it. No muffling, no extraneous noise, no meaningful signal degradation. OK, the HA400 might sound a *tiny bit* harder and less open / "transparent" than the source when it's not being pushed to the brink, but not so much that you'd really even notice it vs. the source. Certainly not so much that I'd ever describe the experience as sonically unpleasant or go out of my way to remove it from the signal chain at any point up to mixdown. And you shouldn't be mixing music on headphones anyway. Ask anybody. Anybody old-school, anyhow. At a fraction of the price of just about any other headphone distrib amp, this definitely gets the job done. You *do* lose the ability to make separate cue mixes, which may be important depending on your musicians. Personally, I just crack the whip that I keep on the wall for these sorts of "problems," and magically, we don't need such advanced functionality any more. And if you're a Head-Fi type looking for a bargain-basement headphone amp just to push signal harder into your $800 Audezes so as to subsequently shower the forum in effusive, flowery and meaningless adjectives re: the end result, no, the HA400 is probably not quite what you're looking for. I said it sounds "fine". But for anybody else besides studio types, just needing a basic way to push multiple headphones from a single source, I have no problem recommending the HA400.

I think my story is a familiar one to many out there: I'm an amateur musician in a band. We don't make "self-sustaining" money that funds our gear. Unfortunately we have needs as a band, and I have a gear addiction problem. Sound familiar? Pretty basic problem. Given we don't have a dedicated practice space to jam out, we've been relegated to practicing at certain times. As a result, we end up not getting together as much as we'd like (and NEED to! Ouch!) There is some pretty fancy equipment out there that would probably serve our needs, notably the JamHub, but we don't have the hundreds of dollars to spend on one of those. (If you haven't checked out the JamHub, you should). While this doesn't provide individual mixes, it is better than nothing for us instrumentalists to silently get our jam on. I have a mixing practice amplifier (Roland KC-150), so I can port in 4 instruments and use the HA400 from the headphone output to distribute the mix to each of our 4 headphones. (Alternatively you can use a mixing board). We can each dial in our volume on the whole which is more or less what we might expect if we were playing together in a room. Yes, my solution above lacks the all important "Mo-Re-Me" (more me), but its a cheap start. If you wanted to add that functionality, that instrumentalist could probably get by with adding a personal mix monitor box (several are under $50), but you have to be careful with inserting less than perfect audio equipment into your main signal inputs. For practice, who cares. For live, you can probably get by, but if you're recording, that's a big NoNo. As for the quality of the sound, I have no issues so far with it. I'm using Sennheiser monitor headphones and I'm very happy with the quality. As long as you have a tone stack on your source (in my case my Roland mixer amp) you have no problem setting the EQ if you're picky about that. Others have complained about the lack of bass, but I had no such issue. I'm happy with the sound just with flat EQ settings. There are tons of other uses for this box: -Watching TV late at night while kids are (slash-should be) sleeping, for up to 4 people -Cranking up TV volume for hearing impaired -Amplifying certain headphones from PC (low output) sources Those are probably the big one 5 stars. I may buy another!

Let me start with this amp is great. It is loud and clear. This is my first behringer product ever, I didn't like behringer before but this changed my mind on some of there products (not on there mixers, I'm am a Mackie freak!) We use this amplifier to power a pair a headphones for a drum monitor and it works well, we use a extension cable (25ft) to plug them in but I am worried it could clip because it needs to be loud. It's a shame them couldn't of put a clip light on each channel but the get very loud so it isn't too much of an issue. Power: When they say "4 powerful headphone amplifiers" they really mean POWERFUL!!! I was 3 yards from the headphones and it turned it up and I could hear it pretty good for being 3 yards away so thats powerful. When you are using them in a drum application you need a lot of power and this amp is perfect. I'm worried the headphones will blow!!!! Only problem is it dosen't have a power switch so you have to unplug it to turn it off but it dose have a power light. Sound: This amp will get very lout without causing any extra hum or his. It is very clear for being a behringer product. As it says it is stereo. Connections: This amp has 1/4 trs connecters for all connections (not standard 3.5mm headphone jack you would find on your iPod or computer) If your headphones have a 3.5mm jack (like on an iPod) you will need a 1/4 trs to 3.5mm adapter like this: 3.5mm Stereo Jack To 1/4" Stereo Plug (Black) You will need a 1/4 cable to connect it. If you are connecting it to a headphone port on a computer or iPod or something you will need another one of those adapter and a 3.5mm cable. There is many ways you could connect this. Plug it into a line-level source headphone-source One mistake I made was I only had a mono cable (only using the left side) so it only played in the left side. Make sure you have stereo adapters and cables (balanced) Overall: Pros: Powerful. Clear. Lightweight. Compact. Cons: No power switch. No clip light.

Behringer doesn't have the best of reputations, but some of their gear does a great job at the price. This is one of them. This gives me plenty of clean volume to run my headphones. I run a project studio with an Apogee Duet as my interface. I needed this because sometimes I need to monitor something while another person in the room is recording/monitoring a track. My main headphones are Beyerdynamic DT 770 Pro, Sennheiser HD 555, Sony MDR-V6, and then I have some others. All of my headphones are comfortably driven by this headphone amp with plenty of gain on tap and I get very good volume, and even at the exact same volume as the input, I find that the sound is improved by using this headphone amp. It's hard to describe, but it just feels a bit fortified and a little bit stronger. I've had a Presonus headphone amp before that cost many times as much as this little Behringer headphone amp and the sound was no better. The volume pots are very smooth and there is no noise that I can hear that is introduced by this amp. Make sure you use a quality sound source because this will faithfully amplify anything that goes in. For instance, if I run a cable from my iMac's built-in headphone output to this amp and turn up the volume, I can hear a little buzz and random digital sounds, but that's not the amp, it's the source. Running the output from my Apogee Duet, the sound is very clean and strong. There are some annoying things about this amp. Obviously the external power supply is annoying, there's no on-off switch, and it's light enough that when everything is plugged in, it doesn't want to stay in place. However, that's nothing that Velcro tape on the desk can't fix, and the rest of the problems are stuff you have to live with when you get something that does so much for less than the price of a decent pair of headphones.

The amp is pretty good. I bought this because I'm getting sound out of my monitor and it just sounded a bit weak. I just bought a new pair of Audio Technica ATH-M50 headphones, which sounded amazing over the last pair I had. But the base wasn't quite loud enough for me when listening to EDM. This little baby is perfect for cranking the music up till my ears can't take any more! I can usually listen on setting 8 for about and hour or so before I have to turn it back down to a reasonable level again. But it's pure enjoyment. Like others have said, when you turn the volume up to 9 or 10 the sound tends to get a bit distorted. But there's plenty of space on the dial for enjoyment. Other comments have mentioned the portability factor of this is not great, which is probably true. It runs on AC power that needs to an outlet. For me this isn't an issue, it sits on my desk and has enough room on the power strip for it's own plug in. I can see how this could a major issue for someone that is on the move a lot, possibly a musician type. Its' pretty small so it doesn't take up too much space. It's only 4"L x 2.25"H x 1.25"D Since i have a pretty small desk space to work with this works out perfect for me. If you're not a mixing professional audio this thing works just great in my experience. If you do studio work you probably want something a bit more expensive. I also had to pick up some cables from monoprice to get from my monitor to the amp. Just plan ahead cause this thing takes 1/4" male plugs, so you'll need a converter if you don't have one. Most headphones come with one, mine did. The one I received is silver in color and not white like in the picture. After owning this product for sometime now. I would agree with others that there is a slight hiss or feedback when you have the volume on low. It's not noticeable at normal volumes though.

家に丁度、アンプのピンジャック出力から取れるコードがあったので入力に入れてみました。すごくいい音です。満足しています。

Ho preso il Behringer HA400 per permettere a più musicisti di ascoltare lo stesso mix durante le registrazioni, e devo dire che fa esattamente ciò che promette: ha quattro uscite cuffie indipendenti, ognuna con controllo volume separato, quindi ognuno può regolare il livello come preferisce. È super compatto, costruito bene con componenti di qualità e anche a livelli di volume alti mantiene un suono pulito. Punti di forza: · 4 uscite stereo indipendenti; · Controllo del volume per canale; · Alimentatore incluso (12 V); · Qualità audio buona per il prezzo. Qualche “ma”: · Lieve rumore o distorsione se il potenziometro è al massimo; · Non ha piedini antiscivolo: su superfici lisce può muoversi facilmente; · Non è un amplificatore ad alta potenza per cuffie esigenti ad alta impedenza: va bene più per monitoring che per uso hi-fi. Perfetto per home studio, prove o registrazioni con più persone. Consigliato! ✅

Well this is honest review. I can say that for this money I couldn't get better for 250 ohm Headphones as a starting point. It can drive my DT770/880 250 ohms however DT880, as an open headphones, need more volume, so not to loudest levels. At this price point it is still a good replacement "just in case" for higher ohm headphones. I'm not sure how will it work with 600 ohm ones as I don't have them and I can tell 600ohm is probably overkill. As soon as you pull above 2PM volume it gets little distorted, bass is lacking, this goes for 250 ohm headphones however at this price point you cant expect miracles.I'm talking here about loud levels, not normal "listening to background music" volumes. AKG K240 can be easily driven as well as DT770 32 ohm and ATH M40x. Bear in mind that I tested this on various sources. There is quite a difference between Computer Out from my desktop PC and my MBP 2011 as there was noise levels and hums and it was really bad in point of listening with Pro Studio equipment as their whole purpose is to spot a bad source/mix. I've seen really bad hum and noise because of my old MBP Power Adapter. Unplugging the power adapter from MBP would remove the unbearable noise, however it was still bad as a noise levels were still there. But connecting it to RCA outputs of Fast Track Pro, a quality DAC with 48(96)/24 which I bought cheaply probably due to lack of drivers (but it works nice on Win10 and Yosemite), I have seen a really big difference of Sound quality and there was almost no noise, only at the levels at which it will already be distorted to play at (louder than 3PM). So bear in mind connecting this to Headphones Out or similar will not have great Sound levels and Quality and a lots of noise levels.Also there is a play of impedance, as different Source levels will have different impact on Powring the headphones. probably that is why my 250 ohm headphones are playing nice only with proper RCA output from a real DAC. Just to note I have also tested MA400. It is not more louder than HA400 for higher ohm headphones, which is really bad as it has more actual power than HA400. A simple switch on MA400 to change the gains would make it a really good headphones Amp but you cant have everything. UPDATE: After some intensive testing it looks like that headphones with impedance lower than 80ohm have massive treble issue on this amp. With k701 its not so much hearable however on k240 and m40x you can hear the difference

Excellent

powered my dt 990 pro 80 ohms