What characterizes a hybrid amplifier?

A hybrid amplifier is characterized by its ability to combine both analog and digital processing methods. This integration allows for improved performance and flexibility in handling various types of signals. Hybrid amplifiers leverage the advantages of both analog and digital technologies, enabling them to perform complex tasks effectively while also benefitting from the characteristics of linear amplifiers.

The fusion of analog and digital processing in hybrid amplifiers facilitates features such as better dynamic range, noise reduction, and signal integrity. This capability makes them suitable for a variety of applications where both signal types may be present or required to process.

The other options do not accurately describe the nature of hybrid amplifiers. Although some amplifiers may operate at lower voltages or be designed specifically for high-frequency applications, these characteristics do not define a hybrid amplifier. Additionally, the restriction to only amplify analog signals contradicts the fundamental concept of hybrid amplifiers, which encompasses both analog and digital realms. Thus, the focus on combining processing technologies is what distinctly characterizes hybrid amplifiers.