sE Electronics RF-X Compact Acoustic Reflection FilterThe RF X is a compact reflection filter built on the proven four layer acoustic technology of sE's flagship Reflexion Filter PRO, engineered for recording artists and engineers who need professional grade room isolation without the size or cost of full booth solutions. Its multi layered designcomprising vented composite outer panel, wool fabric, air gap, and acoustic foamevenly filters across the entire frequency spectrum, delivering nearly coloration