As we mentioned above, a good voltage amplifier will have high input resistance and low output resistance. To achieve this we can combine the beneficial attributes of a CE amp with those of an EF amp by cascading CE and EF stages as shown below.
The circuit above is a two-stage amplifier. The first stage is a CE amp which provides voltage gain and relatively high input resistance. The second stage consists of an EF amp which provides low output resistance, and thus ability to drive a load without sacrificing gain.
