Superpowered alternatives

The Best Audio Enhancer with 3D Surround Sound. Boom 3D is an all-new pro audio app that delivers rich and intense audio with 3D surround sound that makes any kind of headphone sound better! This premium version boasts of handcrafted Equalizer Presets, advanced Audio Effects and a toggle-friendly Intensity Slider that gives full control to the users for fine-tuning the audio as per their liking. Designed only for OS 10.10.3 and later, Boom 3D self-calibrates according to the type of Mac to offer a genuinely personalized experience to the users. The app has been fortified with an Application Level Volume Control, to adjust the audio volume level of the running applications individually. The app has a sleek interface with clean, minimal graphics that is easy to use. Boom 3D has a built-in Mini Audio Player with a simple drag and drop feature to add music effortlessly. In addition, with the help of an optional Audio Component, which works akin to the volume controls on your Mac, Boom 3D can effortlessly enhance your systems audio with Equalizers and Audio effects, for a crisper, clearer and much better sounding experience. Note: Boom 3D may not work when AirPlay and FaceTime are enabled or running on your Mac.

SoundSource is, in their words: Change the volume and output device for individual apps. Adjust your Mac's audio device settings and levels instantly, from anywhere. My version: SoundSource allows you to control where audio is coming and going on your Mac

PairPlay transforms your AirPods into a two-player adventure! You and your partner split the AirPods (one takes the left, one takes the right) and you hear OPPOSITE sides of the same story. Try it with your partner or super fun for kids age 7+ too!