I can't really add to what has been said above. It says about all you need to know. I have used a BP100 and on my first Antoni DB it sounded awful, even through various preamps. However, when my Realist packed in on my current DB I tried the BP100 on it and it really produced quite a presentable sound. I now use a Shadow SH950 which, like an Underwood, fits under the wings of the bridge. It gives a lovely full DB sound. I put that straight into an Acoustic Image Contra, no preamp. Wind the mids off altogether, everything else is flat.