- Mar 31, 2006
I read threads about flipping Grado drivers, taping AKG vents, etc. Here's another no-cost science experiment: K501s over loosely inserted Super-fi 5pros (and the UE attenuator). YOu get a schizoid sound stage, you can tell you're listening to 2 different drivers. difficult to get the 5pros equally loosely inserted on both sides tho.