You’re on the right track

You’re on the right track to find a XLR-1/8″ jack adapter for your camcorder, as Beachtek and SignVideo have product offerings. Other companies with product offerings in this space include:

http://www.juicedlink.com – Mounts to camera. All include preamplifier. Options include phantom, 2-4 XLR inputs, audio meter.

http://www.studio1productions.com – Doesn’t mount to camera, and no phantom or preamp option. Option for 3 XLR input. Plastic case.