After a lot of searching for a DAC that would be suitable for laptops, tablets, and mobile phones, without needing to do anything else other than connecting it and listening, I decided to buy the soundkey and I was right! The difference is noticeable immediately! Apart from the increased volume, the sound of the speakers changes and you search to see where this full and detailed frequency spectrum is coming from! Instrument focus, depth, quality, and all the lost details are highlighted in a way that makes you want to listen to everything from the beginning! The difference is such that it makes you feel great satisfaction from your choice! If the packaging included a USB OTG cable -type-C to micro USB and a carrying case, then it would receive 5 stars+, but the cost!!!