The AT815ST has been updated. Click here for more information on the newest model. At 14.96″ (380.0 mm) in length, the AT815ST is engineered for long-distance pickup in broadcasting and film/TV production. The AT815ST features internal matrixing innovations that allow for professional quality stereo audio with or without an external matrix. Its compact, lightweight design is perfect for camera-mount use. The AT815ST also features switchable low-frequency roll-off and independent line-cardioid and figure-of-eight condenser elements.