Reasons for safety capacitors for power amplifier power

Safety capacitors are already one of the electronic components that everyone is very familiar with. Do I need to add capacitors to the power supply of the power amplifier? In fact, it is usually needed for filtering or decoupling. So what is the reason for the safety capacitors used in power amplifiers?

Safety capacitors are used in situations where a capacitor failure will not cause an electric shock and will not endanger personal injury. Safety capacitors are usually only used for filtering in anti-interference circuits. The safety capacitor for the power supply of the power amplifier is guaranteed to prevent leakage. How many microfarad capacitors should be connected in parallel in the power supply of the amplifier? Suppose it is an AC 220V incoming line switch, and a 104 (0.1uF) / 275VAC safety X capacitor can be connected in parallel.

After reading the safety capacitor in the power supply of the amplifier, do you know that it is also important to choose the quality of the safety capacitor? The quality of safety capacitors determines their service life, so everyone should not be sloppy when choosing a manufacturer.