The Sonos Era 100 has Very Good overall sound quality - although it has some noticeable sonic quirks, this model reproduces music and dialog very well. Bass has good impact and goes fairly deep, but is a touch prominent and boomy. Midrange is a bit hazy and grainy, and the upper midrange is a touch prominent. Treble is extended but is a bit smeared and sizzly and a touch prominent. Does a decent job of recovering room ambience, but is a bit congested. There is no significant difference between WiFi, Bluetooth, and line-in sound quality. Provides adequate listening volume for a medium to large sized room. When combined with a second unit to form a stereo pair they can be placed to provide better stereo separation and the width and height of the sound field noticeably increases but the sound becomes a bit echoey. Tonality is similar to that of single speaker except the bass sounds more a bit more prominent and boomy; and the overall score increases a bit but still remains in the Very Good range.

Versatility is Very Good. It's a stereo speaker, with multi-room support with other Sonos speakers. Supports stereo pairing with another Sonos Era 100. Wireless: WiFi supports dual-band and it has Bluetooth. Communications: Lacks support for calling, texting and messaging features. Digital Assistant Muting: Has a dedicated control to disable the digital assistant by muting its microphones. Audio Connections: Has analog audio inputs but lacks outputs. Audio Tailoring: Has auto calibration and has treble and bass controls. OS Support: iOS, Android. Other connections and features: Lacks a USB device port and integral Smart Home Hub. Display: Lacks a display. Streaming by voice command: Supports voice command of common streaming services such as Amazon Music, Apple Music, Pandora, Spotify, Tune-In, iHeart Radio. Voice ID: Lacks support to setup voice identity using this speaker, although it can use a voice print stored in a user's Amazon account trained from an Amazon speaker. This feature allows the account holder to access personal information with their voice print.

Overall ease of use of the Sonos Era 100 is Excellent. Wireless setup: Setup requires an app downloaded to a device or device connection, easy but not intuitive (e.g. leaving app to change settings/returning to app to continue) - need instructions (may be included in app), may or may not involve inputting Wi-Fi network password, account setups. Console controls: Volume controls are medium contrast prominent +/- labels with an audible indication when max volume is reached. Lacks graphical position marking but can be set to be controlled via a natural language command and have index "marking" via verbal command and acknowledgement and controls all inputs. Audio mute: Unlabeled - well placed - with indication when it is engaged. Microphone mute: Well marked, well placed, clear indication when it is engaged. Source selections: Requires app to be installed, app installation is straight forward. Once app is installed switching between inputs is fairly intuitive. App remote: Volume controls are prominent and have graphical position markings with momentary numeric index markings when touched, and they control all inputs. Mute: (Remote) Well marked, well placed, clear indication when it is engaged and mutes the line input. Voice transport controls: Natural language control of transport (Play/Pause/Skip/Mute), volume controls and source selection was easy and intuitive.