I wanted to know if I could use the Sadowsky DI pedal with my Jazz Bass that has a J-retro Preamp. All I have to do is switch it to passive and I should be able to use the Sadowsky preamp right?
-Julian

Yes, that should work fine. And contrary to what Sadowsky says, you can use it with the J-retro on as well. You just have to turn it down quite a bit, to avoid overloading the circuit. I have a Frankenbass with a U-retro and EMG's. I like to run that through my Sadowsky. The Lows on each unit have a different sound. I prefer the Sadowsky lows, so I usually turn down the U-retro lows, turn up the Sadowsky lows (just a little goes a long way). Then I boost the mids at about 400htz for growl. It's a great Nathan East like tone.

Originally posted by Prefab
And contrary to what Sadowsky says, you can use it with the J-retro on as well

Actually, this is not contrary to what the Sadowsky website says....

Go ahead. Do it.

Actually this is not what the Sadowsky website says...

From the Sadowsky Website:

"The Preamp/D.I. Pedal is recommended for all passive basses, basses with active pickups, and instruments that have active electronics that can be bypassed"