Installed in a Sadowsky MetroExpress 4 with stock Pre with VTC. Ash body, Maple neck and board. It's hard to describe exactly but there is a "fuller" tone pallet compared to the stock HC pups. "Clear tone" ;"Open tone" ; "Defined tone" ; “Forcefull tone” are descriptives that come to mind here. Also, it seems that the tone pallet is a bit larger when adjusting the on -board preamp. More "burpy" when VTC rolled back with bridge pup and more "P-bassy" with the neck pup. Strange- maybe its just a difference in the Freq response compared to the stock pups. Excellent string to string balance too. I'm glad I decided to try them. They look good as well, I like the larger pole pieces.