Stereo amplifiers aren’t as simple as they used to be. The days of equipping them with just analogue inputs and outputs, and a pair of speaker terminals, are long gone.

With laptops, smartphones and streaming services becoming ever-more popular music sources, the stereo amp has moved with the times. Many now contain built-in digital-to-analogue converters, phono stages for turntables, USB connections and Bluetooth streaming functionality.
…
Read full post here:
https://www.whathifi.com/best-buys/hi-fi/best-stereo-amplifiers