I use EBMM Stingrays (3 band EQ) and have a SWR WP 400. There is only one input on the amp but there is a dB cut switch (-10 dB I think) instead of passive/active inputs. I used the normal setting without the dB cut and I could barely put the gain past 12:00 because it was so hot and would distort. I then engaged the dB cut switch and was amazed how much volume was attenuated. I now have to crank up the master volume half-way to get a powerful sound, but it is much cleaner. I was just wondering how you other guys with Stingrays or an equivelant high output preamp plug in to your amp?