While it doesn't offer the surgical precision of its solid-state, gyrator circuit cousin, it has a wonderful musical quality that's difficult to find in other EQ designs. In the past, a good inductor EQ was rather expensive to purchase, potentially setting you back thousands of dollars for a stereo pair. Cheaper versions were either unavailable or severely compromised sound quality due to cheaper components.The search for an inductor EQ that sounds like the expensive ones, but doesn't have the price tag, can be daunting until now!