This way my wife is not bothered by me watching TV in bed.the amp works great

Amp works great, loud

The amp works well to amplify the volume

Over time several of them quit working and today the input jack broke - hence my current shopping spree for a replacement

All works just fine -- a nice inexpensive solution, just what we wanted.

Yeah now we cant complain that we cant hear each other works great

I like this small amp for my desktop, hooked to mac mini, works great with multiple headphone sets hooked up.

This works great in my home studio

works decent in this configuration for practicing with headphones if you keep the volume reasonable

I was worried that this would be noisy or mess up the EQ too much because of some of the reviews, but it is working great.

I was worried when reading some other reviews that I would recieve the wrong plug and have to find an adapter but that was not a problem and overall works great, turns on, havent tested sound quality very thoroughly yet but seems to do what it is supposed to.

Picked this up at Guitar Center for about $24 - works great

Had 2 head sets and a speaker attached to it and all worked great.

I've been looking for a great Micro Amp that can control the volume of my headphones, so after trying several others I decided to give this one a try and this one works great, no problems, I highly recommend this one.

thanks worked

(BTW - the HA400 is high quality, has smooth working controls, and looks like it is built to last.)

This little puppy works great - Very clean and quiet

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

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

first off only the right headphone or speaker works with everything you plug into it, and IT ONLY LASTED 2 RECORDING SESSIONS!!!!!

Amp works great, loud

Having just purchased 6N3 tube amp found in testing has an interesting output impedance issue that this little amp useds as final stage to headphones works very well to resolve

Wonderful, works just like I need it to and is a little work horse.

Well this Amp works good, there is a hum the louder you try to make

This item seems to be working well.

Seems to be good quality and works fine.

This mixer works great..

Has some static, but works

I plug my guitar into the input, and have the headphones in slot 3 (any available slot works great).

This little mixer works great and has been for 2 months now

Is working great after 3 months.

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

To save you looking it up, the nominal input impedance is 4.7K, the output impedance 80 ohms