Bought this amp to power my new Audio-Technica ATH-ADG1X headphones, and it was a simply plug and play and everything worked just as advertised out of the box.

Item works as advertised, very easy to hook up.

Works as advertised.

The product works as advertised

I found a review for the HA400 Amp that detailed the components to build a simple amplifier that did not have the inherent issues of the [super expensive] all-in-one portable TV amplifiers advertised by the late-night telemarketers.

I am using this product with the Audio-Technica ATH-M20x Headphones and it works exactly as advertised.

AS advertised works great

Works as advertised and would purchase again!

Works as advertised

Awesome gadget to keep handy- works as advertised, and easy enough to use

Works just as advertised.

Not sure why Behringer gets a bad rep - this is compact, works as advertised, is affordable and an all around handy thing for the musician

Great little piece of technology that works as advertised.

This should be well advertised

However, i would say that overall this headphone amp is a great value and works as advertised.

It works as advertised without adding any color to the sound of the original source (great when mixing down a track)

It is essential, when comparing different headphones or speakers of any sort, to ensure the volume coming out of the different units is exactly the same, because our ears/brain otherwise will hear the sounds differently and will prefer one sound over the other as much for the volume as for the sound quality.

It works as I expected it to

In addition to the ever-present problem of overwhelming feedback, I've experienced L/R channel dropout by simply touching a knob.

The only improvement I would make is possible having the I/O panel top mounted to allow full access to this unit from one direction (such as for rack mounting it).