Amp/Preamp Asylum

Passive vs active preamps...

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...some speculate that an active preamp usually sounds better because it provides a little more gain and helps match the impedence between the source and amplifier.

Even Charles Hansen of Ayre says he's not sure why they sound better.

In some systems a passive will work well, and not so well in others.

Usually the criticism of a passive is that the system's dynamics are diminished.

The advantage would appear to be less active circuitry the music signal must pass through. And since active circuitry can't improve the signal, but only degrade it, a passive makes sense, at least on paper.

In my system I don't use a preamp since my CD player has a digital volume control and switches to increase gain to match it to an amp.


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