Okay I am now seriously frustrated with ultra low volume output that I get from my Mac,

I had been searching through so many forums but haven't found any solution that would work out for me, so am here again asking you guys for your suggestions, advice anything. I would appreciate that a lot. Thanks!
PS One of my friend suggested me to try this software called Boom. He got it yesterday I guess and he says "it works like magic". Have anyone of you used it, seems like it's something new? Should i give it a try?

PS One of my friend suggested me to try this software called Boom. He got it yesterday I guess and he says "it works like magic". Have anyone of you used it, seems like it's something new? Should i give it a try?