All AKG GN30 E-Series modules come with an integrated connector for quick setup and takedown. The goosenecks are available in various lengths. GN 15 E: 23.5 cm (9.2 in.); GN 30 E: 38 cm (15 in.); GN 50 E: 57.2 cm (22.3 in.). Of course the series also has an integrated 200 Hz bass rolloff filter and LED ON/OFF jumper. Optimum suppression of structure-borne noiseAn essential feature of the installation hardware described below is the attenuation of structureborne noise that prevents the transmission of unwanted noise (footfall etc.). The amount of attenuation is determined by the material mix of the rubber shock mount. Modular Series installation modules usea mixture that is extremely efficient at frequencies below 200 Hz (e.g., knocking noise). Unlike standard rubber mixturees that respond to vibrations very slowly, the special AKG rubber mixture absorbs vibrations practically immediately. This prevents successive shocks from adding up. This rubber mixture is used in the H 600 and H 500. Available capsule modules for GN 15 E/GN 30 E/GN 50 E: CK 31, CK 32, CK 33, CK 47, CK 80.