No. The active preamp is usually not needed. In some situations it actually is. The Lamm phono stage output, for example, is designed for preamplification. I.e. you *have* to buy another Lamm box, or two, or three depending on how much you want to drop on a preamp. But more often than not, you are just preferring the coloration ("additional dynamics, bass slam, etc") that your preamp is adding. Some call that a "sin of commission". Where source and amplifier impedances are well matched and the system otherwise has sufficient gain (the majority of cases), a pre-amplifer can not technically improve anything. If you like the preamp's sound, though, I'm not trying to stop you from using it. Enjoy. I am, however, suggesting to
@germinal, who is clearly on a limited budget, that he stop using price as a proxy for better sound and not be tempted into "logic" like "why would DarTZeel make an expensive preamp if it didn't improve the sound". This is coming from a DarTZeel owner and fan, too.