Two-channel receivers worth investigating are the Marantz M-CR611 and the Harman Kardon HK 3700. The Marantz M-CR611 Desktop network receiver/CD player with Apple AirPlay, Wi-Fi and Bluetooth marks the evolution of traditional two-channel speakers in the 21st century.
In addition to Bluetooth and Wi-Fi, the receiver features built-in streaming for Internet and satellite radio, built-in amplifiers and CD player, support for USB, Android and Apple OS devices, and more. At 50-watts per channel, it may not pack the punch of older models, but it offers numerous listening options and an abundance of features in a small-form factor.
The Harman Kardon HK 3700 is a mid-price receiver that is Internet-ready, with ample connections for additional devices, and delivers 85 watts per channel, features A/B room switching, preamp output and a USB port for connecting mobile devices.