For the price, this thing is absolutely amazing, it pairs very well with the ATH-m50x, it drives them perfectly.

For 50 dollars, this thing is kind of incredible

Loved this thing until it broke

I love this thing

Overall, I recommend this little thing

This thing is dangerous.

This thing is great

This thing sounds phenomenal.

junkThis is the best purchase of the year!It's a simple little tube pre-amp, but wow this thing opens up the soundstage and warms it up with a good headset

All righty now, this thing is incredible

but once that is done this thing sounds like heaven

Anyone rating this product that comes on here claiming to be an audiophile and proceeding to bash the product because it is not up to audiophile standards or because the tubes are just there as a pre filter and not part of the amplification should find better things to do with their time

So all these nice things to say, why did I only give it three stars

Loved this thing until it broke

And the good thing about Logitech is they are Bluetooth and easy to re-pair to other devices

Tried this unit out and it has some good things and bad

One of the coolest things to do with this amp is to roll the tubes and see what a difference the choice of tubes can make.

So in my opinion, this thing isn't good for much more than a conversation piece

With that said, this thing is pretty cool

n’t go wrong on any of it