Preamplifier and power amplifier - that's the difference
If your own hi-fi system includes more than one Bluetooth box, the terms "preamplifier" and "power amplifier" are often used. However, it is not clear to everyone where the difference between the two devices lies. In this practical tip, we explain what you use and what you do it for.
What is the preamp for?
Preamplifiers are only needed in certain cases. For example, if you have a turntable, it may be necessary to connect a preamplifier.
- In short, a preamplifier (also called "PreAmp") is there to adapt the signals of one or more audio sources so that the power amplifier can work with the signal.
- The processing of an audio signal can take place in different areas such as level or frequency response.
- Preamplifiers are necessary for weak audio signals, such as those from turntables. However, these are usually already integrated in modern devices.
- If you are looking for an amplifier, you can compare different devices on bestcheck.de.
What does the power amplifier do?
The final stage or the final amplifier ultimately works similarly to the preliminary stage.
- However, the power stage (also called "PowerAmp") is no longer about processing, but about amplifying the signal.
- The voltage of the audio signal is increased in the power amplifier so that speakers can work with the signal.
- Incidentally, if you buy so-called active speakers, no power amplifier is necessary, since it is already integrated in these devices.
- You can find a price comparison of various power amplifiers at bestcheck.de.
- The preamplifier and power amplifier are also combined in one device as a so-called integrated amplifier.
The next practical tip shows how you can best connect your laptop to the hi-fi system.