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Another thing is the system. It has a built- in video player, I really like it. Speaker is OK, but to make it better, play with a simple equalizer to match your taste. The dustproof protection is a real deal, not a single foreign object got sucked inside. I want to underline that the projector turns on very quickly. I was surprised how important that is. I am switching from sitting at the desk to laying on bed, where my projector is. 5 seconds to turn on is a big deal, as you can quickly turn it on and off whenever you like, without waiting 2 minutes like in HY320 case. This saves power.
And it's not very loud either! The fan is quieter than many other small projectors.
Another word about the system. Because the system is simple, input lag allows me to use it with the computer comfortably. There is little to none delay. The system allows you to change the brightness and contrast, so when the environment is not the night, you can tweak it just a tiny bit to see more. Och and I forgot about the most important thing: the colours. It's not like they are incredibly vivid that your eyes turn into a rainbow or anything. That is not the case when it comes to projectors. The projector is good when you can look at it and your eyes do not hurt. Trust me, hy300 and hy320 are really bad in this case. Hard on the eyes. But this one has not only decently adjusted colors, but also the gamma too! In Chinese projectors, contrast is crazy and the blacks are too black. What should be visible is pitch black. That's a huge problem when watching movies, as most of them are rather darker than brighter.
If I were to describe it in one word, that would be "Balance". Everything it does, is at last good. That is my opinion, and as you can see by the length of this review, I am quite into projectors and technical things.