In the current market there is no high resolution streaming, if what you mean is live streaming from internet. The maximum quality for now is standard redbook CD, from Tidal in the US and Qobuz in Europe. The stream is compressed as a FLAC file, but this is completely transparent. So what you can get is CD quality.
To get this into your DAC you need a streamer of one kind or another. It is important that the streamer has an app(lication) for the streaming service you intend to use, like Tidal or TuneIn (for internet radio - much recommended). My preference is for widely supported streamers like Sonos, Chromecast Audio or Apple Airport Express since no service provider can afford to ignore them. These all have digital outputs, so the sound quality depends entirely on your DAC.
You can use a computer for this (even a micro one like a Raspberry Pi), but
I am a great fan of the Chromecast Audio. It is convenient, dirt cheap, and the digital output is bitperfect, so sonically there is nothing to worry about. Also, and unlike the Airport Express, once you have given the streaming command, the Chromecast makes a direct connection to your router, so you can turn off your tablet/smartphone. You can also use it to stream downloaded files from a NAS (even up to 24/96), but that demands a bit of computer skills (using the BubbleUPnP software). The Chromecast Audio also supports multiroom use, if that interests you. Similarly, if you have been listening in your living room and want to continue listening in the bedroom, you can simply transfer to that bedroom system. Some apps have additional functions, like a sleeptimer in the TuneIn App for internet radio (much liked by my wife).
