In a separates-based system, the preamplifier handles several important jobs: selecting between your various sources, controlling overall volume, and shaping the signal before it's passed on to a power amplifier for final amplification. Because it sits at this critical early stage of the signal path, the quality of a preamplifier has a significant influence on the overall character and detail of your system's sound.

A dedicated preamplifier typically offers more inputs, more precise control and often superior build quality compared with the preamp stage built into an integrated amplifier, making it a popular upgrade for enthusiasts moving toward a full separates system. Many preamplifiers also include additional features like balanced connections and remote control, adding further flexibility to how you use and control your system.

If you're building or upgrading a serious pre and power amplifier setup, choosing a quality preamplifier is one of the most important decisions in shaping your system's overall sound character.