50 m system cable for the CS3 conference system.Optional Accessories AKG CS3 TCT-connector for the AKG CS3 conference system. Matching Products AKG CS3 BUControl unit for conference systems with up to 60 microphone units. Thanks to Plug`n Play, the CS3 BU is easy to operate. AKG CS3 CU 50Chairman microphone unit for 2 conference participants. Fits AKG CS3 CU, with 50 cm gooseneck microphone. AKG CS3 CU 30Chairman microphone unit for 2 conference participants. Fits AKG CS3 CU, with 30 cm gooseneck microphone. AKG CS3 DU 30Intercom station for 2 conference participants, with 30 cm long gooseneck microphone. AKG CS3 DU 50Intercom station for 2 conference participants, with 50 cm long gooseneck microphone.