They are specially designed for inexperienced speakers who talk into the microphone from widely varying angles. The rugged gooseneck is available in two different lengths (C/S - 30cm (12in); C/L - 50cm (20in) and ideal for fixed and mobile installations. CGN99 C/S and CGN99 C/L come with an integrated XLR phantom power adapter with 250Hz bass rolloff. The phantom power adapter connects to any standard mixer input with 9V to 52V power supply.