MICROAMP HA400 Ultra-Compact 4-Channel Stereo Headphone Amplifier for Studio Monitoring

Great little item. I needed it to boost the headphone out on my CD/DAB radio. Really improved output. Easily to set up and no noise. It's not what it was designed for really and so my set up can't be classed as HiFi but it's good enough for me.No distortion, easy to connect.

First off, I'm not using this device the way most people would use it, e.g. multiple headphones. In other words I use this device to distribute my digital music, via my DAC (digital to analogue converter), to four of my five mini-amplifiers. And to this end it works beautifully, it has a volume control for each of the four stereo output channels, as well as an overall volume and balance control and, unexpectedly, more headphone input sockets on it's back than I could ever use (these sockets are not displayed on Amazon). That said, the sound conveyed is clean and detailed with, on rare occasions and to my ears, a slight brittleness in the upper frequencies but nothing I cannot live with. Overall, I find this device easy to use, more controls than I could ever want (I'm a set and forget kinda guy) and it delivers what I bought it for, i.e. distributing streamed music from my DAC to my mini-amplifiers. However, there are a few things I am not partial to, such as the flashing diodes, the plastic look and feel of the device and the fact that it's bigger than I thought it would be. But again, these little nit pickings are nothing that I cannot live with because the overall functionality, usefulness and sound this device conveys far outweighs it's aesthetics. Finally, I would say that this device is well worth the cost, at under £40 (I paid £39.99), and recommend it to anyone that has to pass a stereo signal onto four other devices.

Quickly delivered by Amazon Prime as ever. Great price compared to other online sources. The headphone amp is very small (see photos with hand in shot for scale) but came neatly packaged with the required 12v dc adapter for a UK socket. I am using it to drive my higher impedance (80 Ohm) Beyerdynamic DT770 Pro headphones and although the maximum volume is not ear splitting it is a significant improvement than just being driven straight from my MacBook Air M3 headphone socket. All 4 amps work independently and don’t seem to be affected if all used at the same time. Good clean sound with no distortion even at max volume. For the price and the size it’s a great piece of kit.

I bought this as a four channel audio duplication and disturbution system for a church streaming and podcast recording setup. Easy to setup. Audio quality is great and the quality of the pots for volume control on each channel are good and have no hiss or crackle when adjusting them. Works well with line level singals, mixer desk monitor outputs, computer line inputs and headphones. Price is just silly cheap for this quality. Well done again Behringer - great kit and great price.

Bought to boost the output from BDF3 electronic drum kit VST. The output from the VST is quite low. Having run out through a USB audio interface, I still needed to boost the output to my monitors. Saw this and decided to test a theory. Studio pre-amps cost a fortune so this seemed a viable alternative. Popped it in line between the USB interface and speakers... Job done. Now I can use the monitor volume control on the interface (and just leave this device in line to top up the gain staging). Essentially, if you need to boost any audio... This will do the job nicely. Small device so fits anywhere. Only drawback is the absence of a power switch... But my studio gets powered down centrally after use so not a problem. Brilliant, portable multi-purpose audio booster. Plus you gain more viable outputs too.

Does the job well.

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

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. Secondo molti utenti è una delle soluzioni più convenienti per un amp per cuffie a 4 canali. Punti di forza: · 4 uscite stereo indipendenti; · Controllo del volume per canale; · Alimentatore incluso (12 V); · Qualità audio buona per il prezzo. Qualche “ma”: · Alcuni segnalano rumore o distorsione se il potenziometro è troppo alzato; · 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! ✅

Fait le boulot pour une repet à 4 silencieuse... chacun ses réglages. On a fait une maquette en toute simplicité, avec un zoom r16, en mode hop hop hop chacun son casque... nickel

Buen producto, es más compacto de lo que esperaba y pinta para aguantar batalla. Apenas si lo he probado pero ningún problema hasta ahora

powered my dt 990 pro 80 ohms