I just put these on my Neuser Courage with Glockenklang 3B preamp. They replaced early 90's Bartolini BCs. They really opened up the sound, great improvement over old Barts, which are known for their kind of muffled, low-mid emphasized and IMO overly dark tone. It's now way more aggressive with solid lows and rich but not harsh highs, just what I was looking for. Highly recommended.