This post has not a lot to do with an iPad. However, if you enjoy getting better sound out of your Mac, try Boom2. It is compatible with Yosemite. There is a 7 day trial period too.
As soon as it was installed, the difference in sound was apparent when playing music from iTunes.
You can review the features on the company page.
Another cool feature is the ability to run audio files through the app so they can play better on other devices like your iPad.
If you have a prior version of Boom, you can upgrade for a 50% discount. Compare the differences here.
Do yourself a favor and try the sound experience.