Not sure how it would work in your situation, but the Placette passive is an outstanding product in my experience. I've used the RVC with several systems and it has been a consistently outstanding performer. I understand with passive pres that matching the mating components is critical. Check with Guy at Placette to see if he thinks it might work for you. You might also check with George Wright to see if he can modify your pre to pad down the output further.
Marco
Marco