Explanation:
The statement is False because a differential amplifier typically consists of two transistors, but they are not both CB (Common Base) amplifiers. Instead, one transistor is configured in a Common Base (CB) configuration, while the other transistor is configured in a Common Emitter (CE) configuration. This arrangement allows for the differential amplifier to amplify the voltage difference between two input signals.

Key Points:
- Differential amplifiers are commonly used in applications where the difference between two input signals needs to be amplified.
- The Common Base (CB) configuration provides a low input impedance and high voltage gain, while the Common Emitter (CE) configuration provides a high input impedance and moderate voltage gain.
- The combination of these two configurations in a differential amplifier results in a high input impedance, high voltage gain, and common-mode rejection of input signals.
- The differential amplifier is often used in operational amplifiers, instrumentation amplifiers, and other circuit designs where precise signal amplification and rejection of common-mode noise are required.