Before starting it's important to use a compressed can of air as opposed to other alternatives such as shop vacuums or by simply blowing away the dust with your mouth.

Using your mouth to blow away the dust does not have a strong enough pressure as a can of compressed air does. Also your mouth can end up blowing water particles from your saliva, corrupting and destroying electrical components.

While shop vacuums can supply the same amount of pressure as a can of compressed air, the shop vacuum will more likely end up spraying much larger particles and pieces of debris into the amplifier.