I&#x27;m pretty sure this is exactly what Boom 2 does.<p><a href="https:&#x2F;&#x2F;itunes.apple.com&#x2F;us&#x2F;app&#x2F;boom-2-best-audio-enhancement&#x2F;id948176063" rel="nofollow">https:&#x2F;&#x2F;itunes.apple.com&#x2F;us&#x2F;app&#x2F;boom-2-best-audio-enhancemen...</a><p>Note their reference in the description to an &#x27;optional component&#x27; that enables system-wide effects.