This is a DAP. First thing first, you need to understand what a DAP is, and what its purpose is. DAP is an acronym for Digital Audio Player. It is essentially like an Ipod or MP3 player. However, DAPs are designed with the audiophile in mind, and can play different file types, and have better DACs and amps within.
The AK120ii is made by Astell & Kern, a division of South Korean iRiver. It is their high end division of DAPs. Going straight to the price, MSRP on this thing is $1700 USD. Amazon sells them for ~$900.
Features
The AK120ii can play DSD files. If you don’t know what that is, it doesn’t matter. DSD is stupid. Supposed to be a better file format for quality than FLAC or something else, but files are expensive, and you get locked down into an expensive ecosystem. But if you believe in DSD, this will work with it. Also supports TIDAL streaming, along with a few others. TIDAL is a lossless streaming service. Nice feature to have, if you use TIDAL. It therefore can connect to wifi, for streaming, and software updates. Has Bluetooth too, but that would be stupid to use it with Bluetooth headphones. Various EQ settings are available. It can also function as a DAC/amp combo when you plug it into a computer. Pretty nifty. There is also a setting to lock it as a line out, to plug into an external amplifier. It has a balanced 2.5mm TRRS jack, along with the standard 3.5mm TRS jack. Not sure why they went with 2.5mm for the balanced, as a 2.5mm TRRS jack is a pain to solder. Micro USB port for charging/data. Standard play/pause, skip, back controls, along with a nice digital volume knob. As you can see, the AK120ii is loaded with features. Not much more you could ask for feature wise.
Build
This thing is built exceptionally. Glass front and back, aluminum sides. Feels very premium in the hand. Volume knob is a nice weight, wont activate in your pocket (you can also lock it when screen is off, but I found this unnecessary). Very sturdy feeling. Comes with a nice leather case, real leather, made in Italy. Should protect it well from accidental bumps. Build quality is overall top notch. Like Apple, but even more premium.
Software
Excellent UI. Nice screen to display album art. Very intuitive. Not going to go deep into it, but its pretty easy to use, for anyone who has used an IOS or android device.
Sound
That’s the main purpose of this device, so it better be good, especially to live up to its $1700 MSRP, or even its $900 street price. It has plenty of power, powers my HD650 fine at about 2/3 volume (though I listen a bit quieter than others). Still goes low enough to handle sensitive IEM’s with ease, the main reason I bought it. So the power is good, but what about the actual sound? It seems pretty good, punchy and strong bass, detailed without being trebly, and overall good tonality. Nothing exceptional, but pretty good. I am not discerning enough yet to notice all the minute differences between sources, but it seemed relatively similar to my Geek Out 450, a DAC/amp combo.
Conclusion
So, is it worth the $1700 MSRP? Absolutely NOT. That’s a crazy stupid price. Is it worth the $900 street price. Maybe, but I would recommend buying something else for cheaper over this. If you can get it at a good price used, it could be worth it though. Overall, it is a great device, with just a stupid high price.