The JuicedLink RM222 Riggy-Micro Dual-XLR Preamplifier with Phantom Power is designed for cameras which already have audio meters, manual gain control and a headphone output. The RM222 features efficient operation, small size and a lightweight design for mounting flexibility. It can even be mounted in the hot-shoe on top of your camera. The RM222 features 2 locking XLR inputs with low-noise microphone preamplifiers. Each channel includes a Mic/Line level switch, a Hi/Lo gain switch and a Phantom power switch. The onboard Phantom power voltage is selectable between 48V/12V. The inputs can also be summed mono, copying each input to both sides. The right channel can be completely powered down to conserve battery power if not needed.When engaged, the Audio Output Bracketing feature of the RM222 ensures that your audio inputs won"t clip or distort. By placing the RM222"s performance in mono and enabling the 16dB pad on the right channel, you end up with two signals with identical content, yet the right is recorded 16dB lower. This way if a sudden loud noise or a boomy portion of audio is recorded, you"ll have a backup track with headroom in case the 0dB output clips. The RM222 Riggy-Micro uses a 9V battery. High capacity lithium-polymer rechargeable batteries can be used as well as alkaline. The low-battery indicator can be switched between alkaline or lithium-polymer threshold, so you can use either chemistry without leaving unnecessary capacity in the bat