The juicedLink DS214 is a low-noise preamplifier with a 3.5mm stereo minijack input. There are high/low gain settings, and each channel (left and right) have individual potentiometer control. The output is an amplified mic level suitable for driving the mic inputs on cameras and recorders. Each channel (right and left) has its own dedicated meter with the ability to calibrate them (as different cameras and settings will require different calibration set points). The right and left channels combine for a mono headphone amplifier. For the Canon 7D and T2i cameras which do not have manual audio control, the DS214 AGC Disable feature will force the camera to throttle back its noisy amplifiers, to be able to achieve better signal-to-noise performance from the camera.