8) Cambridge Audio EVO 150 integrated amp ($3,000)

The EVO 150 might be the most modern stereo amp ever created. It features a cool-running Class D amplifier with 150 watts per channel of power, a high-resolution digital-to-analog converter, Bluetooth, multiroom audio with Apple AirPlay 2 and Google Chromecast, and access to streaming services such as Spotify, Tidal, and Qobuz. It has a full suite of analog and digital inputs, an HDMI input that lets you use it as a TV sound system, and even a subwoofer output.