I got Return To The Temple EP - Break in the mail the other day. I was playing 'Now It's Going' and it sounded like shit. Now I've replaced my needles recently so I thought "great my speakers are fucked". But I put in Friction's 'Assassins' CD and played the same tune and it sounded great. I've been using a Numark DM10001X for the past 3 years. I've actually owned it for a lot longer than that but have been really practicing diligently for the past 3 years. Can the sound quality on a mixer degrade over the years? Will a newer higher-end mixer have better sound quatlity? Any other thoughts/suggestions?