Riggy-Micro Dual-XLR Preamplifier (No Phantom Power)
Part #: RM202
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2XLR inputs low-noise preamp. "Riggy-Micro" means that it is super small/light/power efficient and has numerous mounting and accessory options (patent pending). Audio output bracketing (patent pending) for camera overload protection. Alkaline/LiPolymer operation (patent pending). Selective power-down mode (patent pending).
The RM202 Riggy-Micro Dual-XLR Preamplifier by its manufacturer JuicedLink, is a feature rich low noise preamp, built tough, and refined to provide the best power efficiency, smallest size, and lightest weight. It's small size and light weight also makes it unique in terms of flexibility for mounting it to your gear. Additionally, it has features that make it even more useful, allowing you to mount other accessories (mics, wireless receivers, etc) to the preamp.
The Riggy-Micro incorporates Audio Output Bracketing (patent pending) for camera overload protection. All of the microphone signals are combined (by setting the MONO/STEREO switch to MONO), and sent to both the the left and right output channels. The copy on the right output channel is then attenuated to a safe lower signal level (about 16dB lower, by turning ON the Rpad switch). So, if you blow out the main audio channel on the left, you have a back up that you can pull from in post on the right.
This approach has advantages over other types of overload protection, such as limiters. First, Audio Output Bracketing consumes no power from the battery, and also adds no noise or distortion to your audio. Second, every camera gain setting (and, every different camera) will have a unique signal level at which clipping will start to occur. So, if you were to attempt to use a limiter approach, you would need to re-calibrate the point at which the limiter would kick in for each different gain setting of the camera (and, each different camera). Be careful, because not all manufacturers even provide you with the ability to set the limiter threshold setting. Audio Output Bracketing needs no calibration for different cameras or different camera gain settings. The backup channel is always there at ~16dB lower signal level, regardless of the camera or camera gain setting.
The Riggy-Micro uses a 9V battery. Since it is designed for cameras which already have meters, manual control, and headphones, it can achieve very long battery life (longer than the Riggy-Assist series). Additionally, the Riggy-Micro has a number of features to allow you to optimize your battery life. Portions of the preamp can be selectively powered down if not being used (patent pending), to reduce the current and extend the battery life. If you are doing a fair amount of running-gunning with only one mic, you can power down 1 of the XLR channels (patent pending). Furthermore, there are very high capacity lithium-polymer batteries on the market, which also have the convenience of being rechargeable.
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 battery (patent pending). Battery estimates below. Thank you Nikon and Canon for adding the features to the D800 and 5DMKIII that we have wanted for quality audio ... manual control, headhpones, metering visible during recording. Now, we can rip out all of the crap that is not needed anymore (AGC Disable, headphones, metering), and make the smallest, lightest, and most power efficient low-noise preamp ... plus, adding some new goodies ...
The Riggy-Micro is designed to be used with cameras which already have manual control, meters, and headphones. The preamp does not have AGC Disable, meters or headphones. For a preamp which has those features, then check out the Riggy-Assist line of preamps. The Riggy-Micro can also be used as a XLR front end to digital audio recorders. Here are some of the many companion devices used with the Riggy-Micro: DSLRs with headphones, meters, manual control: Canon 5DMKIII, Nikon D800, etc, Camcorders with headphones, meters, manual control: Canon Vixia HD camcorders, etc, Other cameras with stereo minijack mic inputs: Canon C300 (replacing the monitor attachment), Digital Audio Recorders with stereo minijack mic inputs: Zoom H4n, Sony PMD-50
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