1. In addition, with the help of an optional component, which works akin to the volume controls on your Mac, Boom 2 can effortlessly optimize any audio coming from your system on a system-wide basis with Equalizers and Audio Effects; for a crisper, clearer and a much better sounding experience.
2. Also, you get to control the features of Boom 2 and certain other Mac media players using your iPhone or iPad with a free iOS app called ‘Boom 2 Remote’, which can be downloaded from the iTunes App Store.
3. The ‘Boom Remote’ can be installed on your iPhone and iPad to control Boom 2 and your Mac’s default volume level, Boom 2’s Equalizers and Effects.
WavePad Free Audio Editor for Mac OS X is a studio audio editing software anyone can use. Whether you are a professional sound engineer or a casual home editor, WavePad has the powerful features and tools that you need to make your own custom sounds. Boom 2 has a free 7-day trial, but costs $14.99 to purchase thereafter. If you're running Mountain Lion or Mavericks, you can purchase the original Boom for $6.99 instead. Option #2: System-Wide Volume Booster & Equalizer (Free) If you don't want to shell out any money, you can create your own system-wide equalizer for Mac OS X.
Boom2:Volume Boost & Equalizer for PC and Mac Screenshots

Mac Sound Equalizer Free Online

Features and Description
Free Equalizer For Mac Sound Output
Key Features

Latest Version: 1.7.0
What does Boom2:Volume Boost & Equalizer do? Boom 2 is an award-winning pro audio app that gives you finer, higher precision control over all the audio on your Mac, with a cutting-edge 31 band equalizer, an unbeatable volume booster, and a host of unique features for a pristine stereo sound experience. Features that truly enrich the sound experience on your Mac: A Personalized Stereo Sound Experience with the Advanced 31-Band EqualizerThe state-of-the-art higher fidelity equalizer gives you complete control to adjust every minute detail of the audio, to make the stereo experience truly unique and exactly the way you want it to sound. Experience Powerful Sound with the Volume BoosterIncrease the volume beyond your system’s regular limit to enjoy the true power of sound. Crafted Audio Effects, to Shape Your SoundBreathe new life into your sound, by adding ambience, increasing fidelity, shifting the pitch, and more. Superior Stereo Sound ControlIncrease the width of the stereo field and adjust the balance of the left and right channels, with the easy-to-use interface. Additional features Sample Rate Control:Adjust the sample rate of the output device for pristine audio rendering, on higher-end audio devices. File Boosting:Boost the audio to an appropriate level in your music or video files, individually, or in batches. Wireless Control:Access Boom 2 from anywhere within your house or at work with the ‘Boom Remote’ app installed on your iPhone and iPad. NOTE: Boom 2 does not work when AirPlay and FaceTime is enabled/running due to a technical limitation on macOS. 'Boom remains a must-have utility for me on my Mac laptop, and its improvements make it all the better.' - Serenity Caldwell, iMore 'It truly feels right at home on Apple’s new OS; almost like Apple designed it.' - Owen Williams, The Next Web Find us on social:Twitter: https://twitter.com/boomapp/Facebook: https://facebook.com/boomapp/Instagram: https://www.instagram.com/boomaudioapp/YouTube: https://www.youtube.com/channel/UCiHp8wkTV2h7u8afCIij0YQ
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