In addition to a more elegant UI, SoundSource provides audio meters for each item, plus a Magic Boost button to help level out the sound being output from your Mac. From this window, you have fast access to the Output, Input, and Sound Effects of your system devices, each with its own volume slider and pulldown menu. SoundSource resides in the menu bar, summoned via mouse click or global hotkey of your choosing. SoundSource 4 is a versatile menu bar app that enables users to control all audio input and output from a single window. Rogue Amoeba, the creators of awesome audio solutions like Audio Hijack and Fission, have taken the wraps off SoundSource 4, a more powerful way to control sound coming and going from your Mac, no matter which application you’re using.
If you’re thinking, “there must be a better way,” you’d be right. Traditionally little more than a convenient way to adjust volume without opening System Preferences, beginning with macOS 10.12 Sierra the basic slider was embued with the ability to also switch between output devices-and inputs too, by first holding down the Option key. For all the advancements Apple has made over two decades with the Mac operating system, it’s surprising how little attention core features like menu bar audio control have received.
