Ha400 Ultra Compact 4 Channel Stereo Headphone Amplifier Black, Silver

powered my dt 990 pro 80 ohms

Clean audio, good signal, I'm happy with it.

Good product For conversion plugs, the fit is important else you would get crackling or sound cutting off so find the right 1/4inch to 1/8inch converter That is no bearing on this product however if they offered this as optional add on, now that would make it 5* This headphone amp does what it promises

Its works well, good product for overall

Didn't sound well with my planar headphone. The amplification was very weak compared to other products

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

I was searching for a good Headphone Amplifiers for quite a while. I am using a Steinberg UR12 sound card and i needed multiple headphone outputs. Use a BALANCED 1/4 INCH PHONO CABLE to connect it from your SOUND CARD OUTPUT TO HEADPHONE AMPLIFIERS INPUT to get a stereo image. Talking about this product, I find this as a good value for money. In order for you to hear the true sound of your headphones use this product. This provides a good power for your headphones to perform at it's core. Pros: 1) Great sound quality 2) Good quality knobs. 3) Perfectly labelled markings on the knobs. Cons: 1) Not super firm 2) No rubber pads in the base for support. 3) The input jacks are not that firm.