The success of the passive pre is dependent on three issues other than the quality of the passive circuit: does it play loud enough, does your source (CDP and/or phono stage) have a low enough output impedance to drive the passive pre in series with the input of your amp, and do you prefer the colorations of an active circuit. Sounds like you're doing fine with the passive.
On another line, your phono stage could certainly be bettered although the Dynavector may or may not be better enough to float your boat.
Good luck and enjoy!
On another line, your phono stage could certainly be bettered although the Dynavector may or may not be better enough to float your boat.
Good luck and enjoy!