Use of dB in a multistage voltage amplifier. When high amplification is required, it is not usually possible to do so with a single amplification stage, for a number of reasons. For example, a simple transistor amplifier is typically limited to an amplification of about 100 or less. More complex amplifiers, such as the operational amplifier, are also limited to reasonably low amplification because of bandwidth requirements. Therefore, multistage amplifiers are a necessity whereby the output of one stage is fed as the input to the next stage. Suppose a high-frequency amplifier is required with an amplification (often called gain) of 120 dB. Assuming that individual amplifiers with amplification between 1 and 50 are available, what is the minimum number of amplifiers needed and what are their amplifications