[quote user="kitkat"]So how offen should you take your amp apart to clean it, if you should do it at all, mine is about 3yrs old I have never taken the top off would you advise this? What do you do once the top is off, guess you just blast it with compressed air?[/quote]
Unless your kat (get it!) always sits ontop of it, I very much doubt it needs a clean after 3 years. 5 years maybe...if you want to though, compressed air at a near perpendicular angle is probably the best approach (not too close mind). And you could give the pots a bit of a brush with a very soft paintbrush, but otherwise leave it be.
And make sure you have turned it off for atleast an hour before going inside...capacitors arn't to be messed with!