I've been using the K7K Bass Max (wing pinckup + 4 string p/u) I got from Gollihur a few months ago and have been quite happy with the versatility of sound. The integral preamp is handy - I crank down the string p/u for arco, and raise the string p/u to get the attack sounds. I put a two-sided velcro strip on the back of the preamp unit. That way I can mount it on my mic stand or music stand. I found that clipping the preamp on the bow quiver was not ideal. And I did not want to more permanently mount it on the tailpiece. One other bit of experience that might help y'all. I bought a "battery eliminator" at Radio Shack to use with the Bass Max. It's got a clip on it like a 9v battery lead, along with a wall wart transformer so that you can forget about having to put in a fresh 9v battery. Only problem was, with the Bass Max preamp I got a loud line hum from the battery eliminator. So I took it back to Radio Shack and again have to occassionally replace the battery. Anybody have an idea as to how to get rid of the line hum from a battery eliminator?