Excellent!

This is an amazing app with a full suite of audio controls over your mac. As some reviewers have pointed out, it does use a fair amount of battery, but I still give it 5 stars because the power this app has is amazing. It can basically turn cheap headphones or stereos into something that actually sounds decent, so long as you’re willing to fiddle with it. I highly recommend this app!

Stuieb25 about Boom2:Volume Boost & Equalizer, v1.4.3