At Stereo Exchange, a bastion of audio geekery in Manhattan, Michael Toto has watched the upheavals in the audio industry firsthand. Toto recommended a few basic stereo components for entry-level audiophiles.
Cost: Around $1,000.
What it does: An all-in-one amp, preamp and digital-to-analog converter, it can be used in conjunction with a Sonos Connect or any device with a digital output, like the Apple Airport Express. "It gives a warm sound to digital files," Toto said, calling it a kind of gateway into high-end home audio. (Price varies by outer-shell finish.)
Price: Around $350.
What it does: Hook up this music streamer to a home stereo, and it will play audio from Spotify, Sirius XM Radio, iTunes and other sources. It is platform- and format-agnostic, and has an Apple-like cube design. Toto called the connect "the box of choice" and "a product for a modern music listener."