I have a PS Audio II phono preamp which has been in my system for several decades. I think that the later PS Audio preamps were all built around the original basic phono circuit, which I don't think has been improved upon. This original circuit was exceptional in its time in that it used a passive RIAA equalizer and still achieved very low noise. In later models they boosted the gain so that it could handle MC cartridges, and IMHO, performance was degraded. The switching, volume control and line level gain of the "full" preamplifier units is conventional.
3 responses Add your response