ower Ratio (PR) in dB A stereo amplifier takes the output of a CD player, for example, and…

ower Ratio (PR) in dB A stereo amplifier takes the output of a CD player, for example, and increases the power to an audible level. Suppose the output of the CD player is 25 mW and the desired audible output is 100 W per stereo channel, find the power ratio of the amplifier per channel in decibels (dB), where the power ratio in dB is