Sonos is one of the oldest multiroom audio systems on the market and also one of the most successful. Because the way we use digital music has evolved from just playing MP3s with streaming services and beyond, the audio system has adapted and grown as well.

Sonos started as a way to play iTunes playlists on your existing speakers, and has expanded to support streaming music services on a variety of tabletop speakers, amplifiers, soundbars and subwoofers. System control starts with a desktop app and the CR100 handheld controllerthen it grew into mobile apps and voice assistants. Sonos now offers a variety of speakers, which include a choice of Google Assistant, Alexa or Sonos Sound onboard (One, Beam and Arc).

Here are some things about the product line that you should know:

• Works without a hub on a standard Wi-Fi network (no Bluetooth except Roam and the It was a series).
• Supports more than 100 streaming services.
• Works with Alexa, Google Assistant and Siri, although the Era speakers don’t have Google Assistant.
• Compatible with Apple AirPlay 2 and Spotify Connect.
• The new S2 system supports hi-res (ie, Dolby TrueHD and Atmos) while legacy Sonos systems only carries 16-bit/44.1kHz.
• Stream your analog-connected music around the house (with Amp, Five or Port).
• Beam Gen 2, Era 300 and Arc included Dolby Atmos.

With the arrival of its S2 operating system, the company replaced many of them legacy products while also introducing new ones. If you own older components, especially those with “Zone” in the title, they are not interoperable with the new system and instead work with the S1 version of the app.

The currently available Sonos lineup is as follows:

• Sonos Roam 2: $179 — Bluetooth and Wi-Fi outdoor speaker.
• Sonos Era 100: $249 — smart speaker with Bluetooth and stereo sound.
• Sonos Ray: $279 — soundbar with optical connection.
• Sonos Ace: $399 — Bluetooth headphones.
• Sonos Beam Gen 2: $499 — soundbar with voice assistant and HDMI.
• Sonos Move 2 $499: — portable smart speaker with water resistance.
• Sonos Sub Mini: $429 — compact wireless subwoofer.
• Sonos port: $449 — streaming add-on box for current system, analog input/output.
• Sonos Era 300: $479 — tabletop speaker with Dolby Atmos spatial audio and Bluetooth.
• Sonos Five: $599 — large tabletop audio speaker.
• Sonos Amp: $699 — amplifier with analog input.
• Sonos Sub 4: $899 — wireless subwoofer.
• Sonos Arc Ultra: $1,099 — Dolby Atmos soundbar.

There are also three speakers from Ikea that work with the Sonos system: the Ikea Symphonic Bookshelf Wi-Fi Speakerthe $181 Symphonic Speaker lamp base (which replaced the Table lamp) and the Ikea Symfonisk Picture Frame.