The JBL Link 300 has good overall sound quality overall. Bass has good impact, but is prominent and boomy and goes fairly deep. Midrange is fairly even but is a somewhat hazy and a bit grainy and the lower midrange is overwhelmed by the bass. Treble is extended, has some detail but is dry. So-so recovery of room ambience, sounds somewhat congested, and lacks fine detail. No significant difference between WiFi and Bluetooth sound quality. Provides a decent volume level in a medium to large sized room.

Versatility is good. It's a stereo speaker, with multi-room support and lacks stereo pairing support with another JBL Link 300. Wireless: WiFi supports dual-band and this unit has Bluetooth but lacks speakerphone functionality. Communications: Lacks support for calling (which is available on Google's Smart Speakers), texting and messaging. Digital Assistant Muting: Has a dedicated button to disable the digital assistant by muting its microphones. Audio Connections: Lacks analog audio inputs or output. Audio Tailoring: Lacks any user tone controls. OS Support: Android and iOS. Other connections and features: Lacks a USB device port. Streaming by voice command: Supports voice command of many common streaming services such as Google-Play Music, Pandora, Spotify, Tune-In, iHeart Radio. Voice ID: Supports voice identity - a feature which allows the account holder with their "voice print" to access personal information.

Overall ease of use of the JBL Link 300 is very good. Wireless setup: Requires an app downloaded to a mobile device, it's easy and intuitive - needs instructions which are included in app, may or may not involve inputting WiFi network password, and account setup. Bluetooth: This feature is available regardless of WiFi setup - However, it can be initiated in app device settings but this method is less intuitive; a verbal command works best, for example "Ok Google start Bluetooth pairing" then prompt with verbal instructions. Note: Instructions can be requested of "Ok Google" which provides clear instruction on verbal commands. Console controls: Lacks volume control label or symbol but some other markings suggest (+/-) that it is a volume control and has a non-persistent graphical position marking. Volume may also be controlled via a natural language command whichand has a index "marking" via verbal command and acknowledgement. Audio mute: Unlabeled multi-function use of volume controls depressed simultaneously, lacks indication when it is engaged. However, verbal command has a non-persistent indicator that muting was engaged. The command "Ok Google unmute" is unsupported at the time of testing. This required a volume level command or touch control of volume to hear content again - unintuitive. Microphone mute: Well marked, well placed, with 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 requires selecting the "cast" icon in a 3rd party supported app. Fairly intuitive but subject to 3rd Party implementation of cast selection. App remote: Volume control not obvious due to extremely poor placement - only available when content is playing; however, it is repeatable with clear graphic and index of setting. Mute: The marking is not the most obvious, although there is a clear indication when it is engaged. Voice transport controls: Natural language control of transport (Play/Pause/Skip/Mute), volume controls and source selection was easy and intuitive except where noted for the mute function.