I learned something quite unexpected at band practice last night. Was using my Underwood pickup through a Fishman Pro-EQ preamp. Long cord between bass and preamp, short cord to the amp input. Sounded good but a bit midrangey. At break time, I wanted to turn down the preamp, but was fairly far away. Switched the order of cables...3' from bass to preamp, 20' to the amp. Wow! What a difference...smoother, fuller tone, with more volume out of the pickup...had to turn down the preamp quite a bit. I'd been thinking that impedence matching was important, but I'd have to add that a short cable between pickup and preamp is also important. Also, the phase switch was really useful...chasing away that ringing sound...and had to switch it back and forth at different distances from the speaker cab. Anybody else stumble on this?