All dynamic microphones of the E 800 series are working with the same electrodynamic transducer technology. Variants of the model series: E 822 S E 835 E 835-S E 835-S-N E 835-N E 835 FX E 835 FX-N E 838 E 825-S E 825-S-N E 845 E 845-S E 840-S E 840-N E 840-S-N E 815 S-C E 815 S-J E 815 S-X E 815 S-N Used directives and standards: The devices of E 800 Series comply with the following: Pos.No.