Before doing any of the above suggestions (which are all good ones that I completely agree with) you need to make sure your stylus is clean. A gummed up stylus will mistrack on dynamic passages that it could handle if it were clean.
Search for "Magic Eraser" if you don't know how to clean a stylus cheaply and effectively. Even if this isn't the cause of your mistracking problem, you may be surprised by how much better the music sounds after a good stylus cleaning.
After that, as others have said:
- try increasing VTF to near the maximum for your cartridge; use a reliable stylus force gauge, not the dial on your tonearm
- get a better phono stage; it's a highly likely contributor to your problem
- check the gain structure of your entire system; make sure no component is being overloaded
All the above is assuming these bursts of distortion are audible on both channels. If they're happening on just one channel you probably need to adjust anti-skating.
Search for "Magic Eraser" if you don't know how to clean a stylus cheaply and effectively. Even if this isn't the cause of your mistracking problem, you may be surprised by how much better the music sounds after a good stylus cleaning.
After that, as others have said:
- try increasing VTF to near the maximum for your cartridge; use a reliable stylus force gauge, not the dial on your tonearm
- get a better phono stage; it's a highly likely contributor to your problem
- check the gain structure of your entire system; make sure no component is being overloaded
All the above is assuming these bursts of distortion are audible on both channels. If they're happening on just one channel you probably need to adjust anti-skating.