sE Electronics X1 Studio Bundle Includes the Se X1 condenser microphone and Reflexion Filter X mic isolator This studio bundle from sE pairs up the detailed X1 condenser with the Reflexion Filter X mic isolator Get a crisp, clean source recording from the hand-built capsule of the X1, while virtually eliminating any room coloration of your sound with the RF-X mic filter A perfect combo for recording in less than perfect environments This studio bundle from sE pairs up the detailed X1 condenser with the Reflexion Filter X mic isolator