There is no better choice for these bucks and even more. They can power almost all headphones on the market except for electrostatic ones, of course. The only downside is that when it is at the highest gain settings, it heats up quite a bit, especially in the summer. The ifi ipower power 5V supply is also fantastic. I recommend it blindly.

End game in my personal opinion.

Coming from a Zen Dac (which currently serves as a balanced dac for the Zen Can with a 4.4 to 4.4 interconnect) and a Magni3/Modi3 stack from Schiit, I can say that I am satisfied with the amplifiers. If you don't belong to the category that wants multiple amplifiers for the different flavors they add to the sound, then there is no need to look further.

**bonus point for me is the 4.4mm balanced out in the back for powered speakers, although it requires a 4.4 to dual XLR adapter.

Dead-silent noise floor, something that I noticed as a problem with the Zen Dac with very sensitive IEMs, same quality sound signature as the Zen Dac BUT with improvements. Also, a smoother sound but cleaner, more analytical, and less "dark" than the Zen Dac. I dare say even cleaner than the Schiit Magni3, which I considered an achievement for that amplifier.

The xbass does the same excellent job as the Zen Dac with the only difference being that it is more discreet here. It doesn't overload the lows as much as the Zen Dac and it does it with the same success in leaving the other frequencies unaffected. Fun button #1 all day long.

The 3D is a welcome addition, fun button #2, and it gives the sound more space towards the front and back (it leaves the distance of the sounds heard from the right-left unaffected).

POWERRR!!!! Clean power in any connections on it, and plenty of it. I won't say much about this particular aspect except that it drives my DT880 600ohm (balanced mod but even in single-ended it has absolutely no issues) comfortably and their sound is out of this world. 1.9W at 64ohm balanced is not something you can call little. It doesn't struggle with anything you throw at it.

For me, there is no need for someone to look for something more for their setup, whether it's pro or home. The only reason to go for something else is either a need for a feature that the Zen Can doesn't have or the "bug" that most audiophiles have inside us that nothing is ever enough.

I bought the amplifier about a month ago and I use it with the hd 650 headphones, which it drives adequately and cleanly on the first gain setting, maybe even the second. My experience with the amplifier so far has been very good, I am particularly satisfied, especially considering its low cost.

Crystal clear sound and neutral character... I can listen to the 650s effortlessly for hours. When left on without playing music, it does get quite warm. The build quality is good, with the volume knob standing out. If someone wants something that pairs nicely with the 650s for the price it asks, I believe it is in the front line. At this price, I cannot find any negatives.

Attention, the amplifier has a lot of power and one should always start from 0db and continue if it suits them.