8 responses Add your response
Maybe all you need is something like the EVS or Endler attenuators that connect to the inputs of your amps and allow you to attenuate the signal coming in from your preamp. Both of these products are transparent and work quite well.
If you want to try a full fledged passive preamp then I would recommend a transformer volume control (TVC) such as the Prometheus or some of the Stevens & Billings based models that are available.
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.
I think that I am the fourth to recommend the Placette Passive Preamp. Maybe we are trying to tell you something. If the preamp gets loud too fast, Guy will add an extra resistor to put your normal listening range at the mid point at no extra cost. Anyway you look at it, the sound of this preamp will be completely transparent.