Updated Apr 13/20
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BeachTek MCC-2 - $119 - in stock
The Beachtek MCC-2 is a triple accessory shoe bracket combined with a two-channel, mini-jack audio adapter that lets you mount, connect and control two audio devices for camcorders or DSLR cameras.
BeachTek DXA-Micro Pro Active XLR Compact
Adapter - $259 -
Display Model on Sale $189
Designed to connect one xlr mic with 48v phantom power and two 1/8" microphones to a dslr or camcorder with a 1/8" mic input. Both 1/8" inputs feature plug-in power. This allows you to record the audio directly to the camera in sync with the picture for videographers, sound designers and more. With dual gain-adjustment settings, the adapter provides a stronger audio level to the camera and bypasses the noisy camera preamplifiers. Built-in good/over level indicators allow you to verify the signal levels at a glance and the trim controls let you adjust the output signal for optimum recording. A headphone jack monitors your audio from the adapter during recording or camera playback. Finally, the dxa-micro-pro will conveniently mount under the camera for a secure attachment to a tripod base or will mount on the hot shoe above the camera.
Indi Pro Tools Mini Box - Reg $95 Sale $39 - limited stock
Convert XLR to mini-jack with this very simple adapter. Two XLR ports to mini-jack. Has a 15mm rail mount adapter, so you can mount it to any 15mm rail. Note that there is no other way to mount this adapter - no 1/4 screw hole. Adapter is passive, so it does not provide phantom power to the mics or any gain/boost of the signal. Also note there is no gain control on the two inputs, so you have no way to individually change the volume of the inputs as they go into your camera.
Find XLR cables and mini-jack adapters here
Find XLR Shotgun mics here