I got Boom 3D a few months back on 2013 MacBook Pro, never had previous versions of Boom. I'll say that Boom 3D does improve sound. I'm impressed with sound improvement/boost on bluetooth headphones, Turtle Beach 600 Stealth. Also, provides nice sound quality boost to external speakers. I got MacBook connected via HDMI to 32" Vizio TV which is in turn connected via optical cable to Bose 3-piece speaker system. Even through HDMI and then optical connection, Boom 3D makes real nice improvement of sound coming through Bose external speakers, better base and more depth to music. Not sure Boom is worth money for just improving MacBook internal speakers. I think makes sense if trying to improve sound quality/boost of headphones or external speakers.