BehringerMicroAMP HA400 4-channel Headphone Amplifier (HA400d1)

As a Dj. It really works with my mixing, it increases the volume of my serato, I can hear the music over the sound system and make my mixes more precise.

So far works great. Good price.

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.

Excelente producto, robusto y suena de perlangas.

good price vs quality

The Behringer HA-400 is a dedicated stereo headphone amplifier that delivers a clean rich sound. When I ordered it I was converting a Klipsch Promedia 2.1 system into a passive set of speakers. The external 2.1 channel amp I bought for the speakers didn't have a jack for wired headphones.Before ordering the HA-400 I was thinking that I needed to buy better headphones or earbuds. Music sounded a bit thin, and I prefer not to compensate with equalizer settings.When I listened through the HA-400 I was immediately impressed by the sound quality that was richer and more balanced. Specifically the HA-400 delivers more low end without sacrificing the mid range and high end. I hear no loss of quality when I turn up the volume. Add to that the compact size, simple operation and low cost. I think it delivers huge bang for the buck.

I was looking for a way to use headphones with my tube guitar amps, instead of using their speakers, for silent practice. If your amp has a Preamp Out or an Effects (FX) Loop, this headphone amp will do the job.Just a couple of notes:1) If your source is Mono (like most guitar amps), you’ll need a ‘Female TS 1/4” to Male TRS 1/4” Adaptor’ (such as a Hosa GPP-419) for the input jack.. Otherwise you will just get sound in the Left channel of your headphones. (Remember, this is a STEREO amp, so you have to present two separate channels to the Input jack and a simple TS cable won’t do that by itself)2) If you are going to connect this headphone amp into your FX Loop, plug the Send into the input of this unit. That will get sound to your headphones. BUT.., in order to turn off your guitar amp’s speaker, you’ll need to plug a second cable into the Return jack and let the other end just hang there — that’s what disconnects the speaker.Thanks to this headphone amp, I can now play my high gain amps without disturbing anyone else.

I was in need of a headphone splitter not just an amp but when I try to split the signal goes into mono and all the headphones I connect can only hear sound from one side of headphones. I managed to make it work during a podcast but I do not recommend this headphone amplifier as a splitter because of that. I will have to purchase another in future. I will deal with Mono for a few more months. The product itself isn't bad, feels sturdy and I have had no issues with loud buzzing and such as others. But I do have the issue of it feeding my MONO ONLY.