Behringer MA400

A bit flimsy, but does the job

The build quality is a bit flimsy, but the sound is pretty good for the price.

Extremely useful

A great little headphone amp, with tons of useful features. Highly recommended This is my second one. (Not because there was anything wrong with the first, I just needed another). It's used in a small studio setting). As others have mentioned, it doesn't really work all that well if you for instance plug your microphone directly into it, you need a preamp in between.

Perfect for monitoring

Low noise, good power. No complains.

Perfectly works

Easy way to hear better what mic is taking.

Very useful mixer

I like this tiny personal mixer. It allows to have a good monitoring mix on stage. The only feature I miss is the belt clip.

Cheap & durable

Use this for visitors in a home for the elderly. Visitor speaks in a mic and inhabitant listens through a closed headphone. Only device that allows this for this price. Decent sound quality but headphone amp isn't very strong.

This thing is useless for amplification

I bought this hoping to amplify my headphones instead of having to adjust the volume on my amp when I practiced later in the evening.

This unit did absolutely nothing to amplify the signal: whatever goes into the unit comes out of the unit at the exact same level, with no perceivable amplification taking place whatsoever.

The unit has great build quality and it's cool that it has several input and output options, but it doesn't actually amplify anything.

Thankfully it's not an expensive product, so I couldn't get too upset about it not working correctly. I like to think that I simply "got a dud" but if this product works "as intended" then I'd recommend to stay away from this Headphone "Non-Amplifier" and get something else.

Such a disappointment for such a promising product.

no volume increase

Got no amplification from this device.

Tried 2 pairs of headphones - Sennheiser hd25 70ohm and beyerdynamics dt880 pro 250 ohm, both had same volume levels from my forcusrite scarlet solo with out the amp.

Tried in stereo and mono with and without jack Adapter 3.5mm Stereo To 6.35mm.

Great for pedalboards

I use this headphone amp on my pedalboard so i can practice around my house without having to drag my amp or my interface with me. It works like a charm but since the signal coming from the pedals is quite weak and i had some space available on my pedalboard, i put an old ART Tube MP that i had laying around between the pedals and the amp. Now my pedalboard sounds amazing by itself.

My signal chain is:

Bass > Zoom MS60B > EHX Deluxe Bass Big Muff > Booster/EQ > Boss DD3 > TC Electronic Hall Of Fame > ART Tube MP > Behringer MA400 > Beyerdynamic DT-770 PRO

(It's a weird set of pedals and a even weirder placement, but that's how i like it =D)

Expected more output

I didn't made any measurements but for example you have a set of Behringer drums as the XD80USB which have a low headphone output and are expecting this amp to use the monitor input connected to line outs in order to get a better level, forget about it. There is not enough gain. Output power is reasonable with sensitive headphones, I used German Maestro GMP8.35 Monitor.