The sound quality since I changed over to Ubuntu 14.04.3 is terrible but over all the past week, suing ubuntu has been awesome, only the sound quality sucks. I managed to get a semi ok sound but it is a tin sound, it is the ska preset using pulse audio equalizer. But it i not perfect by any means, I still get distortion, sometimes only ever so slight but your attention sticks, I can explain further than that. Just it is not as enjoyable as when I had XP. To ask me to delineate further is fruitless. I have tried several posts and solutions, installing all kinds of things and I just don seem to be finding the answer or though there is some improvement as mentioned already...Please assist if you know a lot about Ubuntu and sound and the two together... I tried but don even recall what exactly, various thing regarding posts about ASLA and Pavla I think it was... Any ways, I think any one is going to get the point, I need specific help here... PLEASE
Have a look at this answer. Without any information about your current set-up(sound card,drivers,speakers etc.). The only possible solution seems to be using an equalizer that can tweak the sound a per your requirements.