What is the point of a passive preamp?

More and more audiophiles and DIY audio enthusiasts are discovering the benefits of passive preamps. Why? Because more often than not, a passive preamp does the essential job of a preamp (input switching and controlling volume) while doing the least amount of harm to the audio signal.

What is the difference between a preamplifier and an amplifier?

A preamp simply boosts the signal, whereas an amp has a much wider range of functions, aside from boosting the line signal. ... For example, an amp can also mute signals, change the balance between channels, add filters and modifiers to the audio signals, and so much more.