I’ve listened to the PrimaLuna ProLogue Premium preamplifier at great length and carefully studied its construction. I’ve installed the review sample in my system many times and removed it just as often—it’s been banged about. So I can say, without doubt, that it’s built to last and is musically effective. Its combination of beguiling transparency and dynamic authority reproduces complex music and recordings with ease and élan. In even a very expensive system, it will not set limits on musical enjoyment. As I concluded my review of PrimaLuna’s ProLogue Premium power amp: Class A sound at a Class C price.