How does tuned amplifier acts like a filter also?

Question

How does tuned amplifier acts like a filter also?

Answer 1

Consider your word "tuned".

A tuned circuit is one which accepts (or rejects) only one frequency  or a defined range of frequencies.

A tuned circuit is, therefore, a filter.

A tuned amplifier is effectively an amplified filter.  

Answer 2

Only the amplifier comes with an equalizer shall give you some filter action. Equalizer is made of a series of frequency filters that can be used to cut down a certain range of unwanted sound wave. Its limitation is: it only good to control a frequency range from 100 c/s till 16000 c/s.

Answer 3

from the name itself,a tuned amplifier means it will be tuned to a particular

frequency and amplification is carried out.in this all the other frequencies are stoped and the tuned one is allowed so it acts as filter.

Answer 4

Any amplifier has a transfer function that describes the relationship between the input and output of an amplifier.  (this isn't exclusive to amplifiers)  Usually, but not always, high frequencies are "rejected", and low frequencies are amplified.  It all depends on zeros and poles of the transfer function.  If you want to learn more, look up Bode Plots.  

Answer 5

Since, the amplifier is tuned only to amplify certain frequencies, it will suppress other frequencies (by not amplifying them) and thus will act as some kind of a filter.