I replaced the stock neck pickup in my Gretsch 6128-TSP with the T-Armond DeArmond Mount neck pickup. The stock PU was very muddy on the low end. The new T-Armond cleaned that up. It also boosted the output from the neck PU compared to the original Gretsch PU. With that success, I plan to purchase the matching bridge T-Armond and replace the stock bridge PU. Replacement was a snap as all holes lined up exactly and the new pickup dropped right into the existing PU cutout.