Wadia s7i output - to adjust or not to adjust?

I just purchased a Wadia s7i cdp. I've read discussions regarding Direct to amp or via pre-amp. I'm running direct into Bryston 7Bst's. I love the detail I'm getting but I also wonder about the the "Bass slam/Drive/fullness" goner's talk about when the connect via pre-amp. My output setting from the factory is in the correct range for volume level (I run between 75-100) My question is ...has anyone increased the output to try to get the "Slam" etc; even though they were already in the "Correct" volume setting...or did you feel you lost some of those precious "Bits" and it wasn't worth the change. I know I should just try it but it's not as easy as just flipping an external switch. Appreciate any shared experience regarding this.
tnx.